JPH1056995A - Thawing of frozen sushi - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the palatability of frozen Sushi (vinegared rice topped with fish fillet, etc.) by controlling the temperature of the Sushi topping and the Sushi rice to the temperature of Sushi served in a Sushi bar. SOLUTION: Pieces of frozen Sushi 10 are arranged in a Sushi container directing the toppings 12 upward. The Sushi container 20 is closed by placing a magnetic shielding material 41 having a form of a lid on the brim of the Sushi container. The Sushi pieces in the container are heated with electromagnetic wave in a state covered the top and the side of the Sushi toppings 12 with the magnetic shielding material 41. The Sushi rice 11 can be thawed to a temperature slightly higher than that of the Sushi topping 12 by this process.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of producing, rapidly frozen, and sold in a store, bringing it home, and thawing it by a microwave at the time of eating.

[0002]

2. Description of the Related Art Generally, when sushi is eaten at a sushi restaurant, and when the same sushi is brought home and eaten, the taste is reduced when brought back. The reason for this is that the temperature of the sushi rice and the sushi material differ immediately after the sushi is grasped, and a condition that the temperature of the sushi material is slightly lower than the temperature of the sushi rice is a requirement for improving the taste. Accordingly, the applicant has proposed a method of thawing frozen sushi with the material of the frozen sushi down so that the temperature of the sushi material is slightly lower than the temperature of the sushi rice when thawing the frozen sushi (Japanese Patent Application No. Hei 7-47434). .

[0003]

The above-mentioned proposed method has a functionally effective effect that a good taste can be obtained without any inconvenience. When the sushi was softened, the upper surface of the sushi material that had been lowered in the microwave oven became flat like a container. That is, when the sushi foods are arranged on a plate with the sushi foods facing upward, the upper surface of the sushi foods becomes flat, the appearance becomes very cheap, and there is a problem that the taste is reduced psychologically.

[0004]

Means for Solving the Problems The above-mentioned problem is solved by arranging frozen sushi in a sushi container with the sushi material facing upward, and placing a lid-shaped magnetic shield material on the edge of the sushi container to provide a frozen sushi. The upper surface of the sushi is covered by bending the side surface of the magnetic shield material downward to cover the upper and side surfaces of the sushi material, and the problem is solved by performing electromagnetic heating. Specifically, the magnetic shield material is made of a hydrate heated by electromagnetic waves. More specifically, the magnetic shielding material is made of a synthetic resin water container and water contained in the water container, and provided at the bottom of the water container with a recess slightly larger than the outer edge of the sushi container. The bottom of the water container is lowered to the side of the sushi material by fitting the recess into the upper surface of the sushi container.

[0005]

[Function] A frozen sushi container is covered with a magnetic shielding material consisting of a water container filled with water, covered with a lid, placed in a microwave oven and electromagnetically heated, and the sushi rice is emitted from a magnetron constituting a microwave oven. It is heated and thawed by the microwaves as usual. Since the portion of the sushi material is covered with the water put in the water container, the microwave in that portion heats the water and remarkably attenuates and acts on the sushi material, so that the thawing is delayed. On the other hand, the water contained in the water container is heated by microwaves under the same conditions as in a normal case, and the radiant heat thereof weakly heats the sushi material.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. In FIG. 2, reference numeral 10 denotes a frozen sushi to be thawed according to the present invention. The frozen sushi 10 is a sushi container 20 made of synthetic resin.
And the lid 30 is covered. FIG. 2 shows the lid 3
0 shows a state in which several types of frozen sushi 10 are stored. Here, the frozen sushi 10 is a nigiri sushi 10a in which a sashimi material 12 made of sashimi is placed on a sushi rice 11 and a sushi material 12 made of an ikura on the sushi rice 11
And a seaweed rolled sushi 10b with seaweed 13 wrapped around them.

As shown in FIGS. 3 and 4, the sushi container 20 is formed by molding a thin synthetic resin plate, has a downward U-shaped cross section, and has a substantially rectangular edge 21 in plan view. Rim 21
A relatively shallow bottom plate 22 is provided inside the
2 is a sushi hole 2 having substantially the same size as the planar shape of the frozen sushi 10
3 are formed. Reference numeral 24 denotes a concave groove, two of which are formed in the longitudinal direction in order to increase the bending rigidity of the sushi container 20 in the longitudinal direction. In addition, the concave groove 24 forms a concave portion for finger hanging on the partition wall between the adjacent sushi holes 23, and the thawed frozen sushi 1
It is easy to pick out and remove 0 with a finger. Reference numeral 25 denotes a recess for storing gully and soy sauce, and has a substantially right triangle.

[0008] The frozen sushi 10 is placed in a sushi container 20 as described above, and is frozen at about -20 ° C and is commercially available.
To defrost it with a home microwave oven (typically a 600 W (watt) type is used) 40, FIG.
The magnetic shield material 41 shown in FIG. The magnetic shield material 41 blocks the electromagnetic wave of the microwave oven 40 or consumes the energy of the electromagnetic wave by itself so that the electromagnetic wave weakly acts on the sushi material 12. Therefore, the magnetic shield material 41 is used to cover the upper surface and the side surfaces of the sushi material 12 with a material having an action of weakening electromagnetic waves. Such an action of weakening electromagnetic waves can be seen in metals in general, but if metal is put in the microwave oven 40, it will cause a failure. In this embodiment, the magnetic shielding material 41 is made of a plastic box-shaped water. A configuration was adopted in which the container 43 and the water 43 contained therein were used, and the water 43 absorbed energy of electromagnetic waves.

The water container 42 is made of a transparent thermosetting resin, and is formed in a box shape by a bottom plate 44 and a side plate 45. Reference numeral 47 denotes a cover plate which covers the opening on the upper surface of the water container 42 to prevent water from spilling out. The cover plate 47 is provided with a hole (not shown) through which steam can escape. The bottom plate 44 has a recess 46 slightly larger than the outer edge of the edge 21 of the sushi container 20.
Are formed. The size and depth of the recess 46 are slightly larger than the outer periphery of the sushi container 20 and are substantially similar. That is, the plan shape of the concave portion 46 is substantially rectangular, which corresponds to the plan shape of the sushi container 20 being substantially rectangular. The depth of the concave portion 46 is set such that the upper surface of the bottom plate 44 covers the side surface of the sushi material 12 when the water container 42 is put on the sushi container 20. Therefore, when water is poured into the water container 42, the bottom of the water covers from the upper surface to the lower surface of the sushi material 12, that is, covers the upper surface and the side surfaces. The magnetic shield material 41 is not limited to the water contained in the water container 42, but may be made of a synthetic resin bag such as a cooked rice containing solid water or a water supply resin containing water. If the water is solidified in this way, problems such as spilling of water are eliminated, and handling becomes easier.

Next, a method for thawing frozen sushi will be described with reference to the above embodiment. First, as shown in the figure, a water container 42 containing water 43 is placed on the sushi container 20, and the microwave oven 40 is operated in this state for one and a half to two minutes. Microwave oven 40
Heats water 43 together with sushi rice 11 and sushi ingredients 12.
That is, since the energy of the electromagnetic wave acting on the sushi material 12 on the upper side is consumed by the water 43, the sushi rice 1
1 is a temperature about 5 ° C. higher than the sushi material 12. In addition,
When the frozen sushi 10 is thawed in this embodiment, the water container 4
The temperature of the water charged in 2 also increased from 22 ° C to 53 ° C.

[0011]

As described above, according to the present invention, the frozen sushi 10 thawed by the microwave oven 40 is thawed at a temperature slightly lower than that of the sushi rice 11,
The temperature difference or temperature ratio between the two is the same as when eating at a sushi bar counter, and the taste is significantly improved. Further, if the magnetic shield member is made of water, there is an effect that the operation of the microwave oven is not adversely affected.

[Brief description of the drawings]

FIG. 1 is a side view of a sushi container showing one embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view thereof, in which sushi is contained.

FIG. 3 is a plan view of the sushi container showing a state where a lid is removed.

FIG. 4 is a sectional view taken along the line IV-IV.

FIG. 5 is a cross-sectional view showing a state in which a microwave oven is being thawed.

[Explanation of symbols]

10: Frozen sushi 10a: Nigiri sushi 10b: Nori roll sushi 11: Sushi rice 12: Sushi material 13: Nori 20: Sushi container 21 ··· Rectangle edge 22 ··· Bottom plate 23 ··· Sushi hole 24 ··· Ditch 25 ··· Recess 30 ··· Lid 40 ··· Microwave oven 41 ··· Magnetic shielding material 42 Water container 43 Water 44 Bottom plate 45 Side plate 46 Recess 47 Cover plate

Claims (3)

[Claims] 1. A frozen sushi is arranged in a sushi container with the sushi material facing upward, a lid-shaped magnetic shield material is placed on the edge of the sushi container, and the top surface of the frozen sushi is covered. A method for thawing frozen sushi by bending the side of the sushi downward to cover the upper and side surfaces of the sushi material and electromagnetically heating the sushi material. 2. The method for thawing frozen sushi according to claim 1, wherein said magnetic shield material is a hydrated substance heated by electromagnetic waves. 3. The sushi container according to claim 1, wherein said magnetic shield material is composed of a water container made of synthetic resin and water contained in said water container, and a concave portion slightly larger than an outer edge of a sushi container at the bottom of said water container. A method for thawing frozen sushi, wherein the bottom of the water container is lowered to the side of the sushi material by fitting the concave portion to the upper surface of the sushi container.