Soy-Glazed Rice Crackers (醤油せんべい, Shōyu Senbei)

Ingredients

Equipment Needed

• •Suribachi and surikogi pestle, or a heavy bowl and potato masher
• •Parchment paper
• •Rolling pin or flat-bottomed small plate
• •Wire racks
• •Senbei-yaki ami over charcoal, or a broiler-safe rack set over a sheet pan
• •Pastry brush

Instructions

1. 1

   Rinse the rice

   Put the rice in a bowl, cover it with cool water, swirl with your hand, and drain. Repeat until the water runs almost clear, then soak the rice in fresh water for 30 minutes and drain well. Rinsing removes loose surface starch that would make the dough gummy; soaking lets the grains cook through evenly, which matters because hard centers never pound smooth.

2. 2

   Cook the rice

   Combine the drained rice and 1 1/4 cups water in a rice cooker and cook on the standard setting. For a pot, bring the rice and water to a boil, cover tightly, reduce the heat to low, and cook 12 minutes, then take it off the heat and rest 10 minutes without lifting the lid. You want tender rice that is not wet; excess water only lengthens the drying and weakens the final crack.

3. 3

   Pound the dough

   While the rice is still hot, transfer it to a suribachi, the ridged Japanese mortar, or to a heavy bowl. Pound and smear it with a damp surikogi pestle, or a potato masher, for 5 to 7 minutes, until it becomes a sticky dough with a few grains still visible. Warm rice binds because its starch is pliable; cold rice tears and gives you cracked, ragged edges before the crackers even reach the oven.

4. 4

   Shape thin rounds

   Set a sheet of parchment on the counter and keep a small bowl of water beside you for your hands. Divide the rice dough into 18 pieces, about 20g each, and press each one between parchment into a round 2 to 3mm thick. Thinness is not decoration here. A thick cracker dries slowly, bakes hard before it bakes crisp, and then makes you work too hard at the table.

5. 5

   Dry the rounds

   Lay the rounds on wire racks and dry them in a 200°F oven, or 95°C, for 1 1/2 to 2 hours, turning once, until they feel firm, dry on the surface, and no longer tacky. The old way trusts moving air and time; at home, the low oven is the sensible stand-in, because cooked rice should not sit damp for hours in a warm kitchen.

   This is the detail that decides the senbei. Water must leave before browning begins, or the center stays leathery while the outside pretends to be finished.
6. 6

   Bake them plain

   Raise the oven to 325°F, or 160°C. Bake the dried rounds on a rack set over a sheet pan for 20 minutes, flip them, and bake 10 to 15 minutes more, until pale beige, light in the hand, and hard through the center. Do not chase deep color yet. The glaze will bring the color, and rice browned too far now turns bitter under soy.

7. 7

   Make the glaze

   Combine the shōyu, mirin, and sugar in a small pan. Warm just until the sugar dissolves and the sharp alcohol smell softens, about 1 minute, then take it off the heat. The glaze should be thin enough to brush in a whisper. Thick, sticky sauce makes candy; this is senbei.

8. 8

   Brush and grill

   Heat a senbei-yaki ami, a wire cracker grill, over gentle charcoal, or set a rack 5 inches below a hot broiler. Brush both sides of each cracker very lightly with glaze, then grill or broil 30 to 60 seconds per side, just until glossy and lightly blistered at the edges. Watch closely. Soy burns quickly, so this step sets the surface; it is not the time to wander off and reorganize the tea shelf.

   If you want a deeper soy finish, brush and grill a second time after the first coat sets. Two thin coats beat one heavy one every time.
9. 9

   Cool and store

   Cool the senbei completely on a rack. They crisp as the glaze sets, so judge them only after they are fully cool. If one softens, return it to a 300°F oven, or 150°C, for 5 minutes, then cool again. Store airtight once cold.

Chef Tips

• •Use uruchimai, ordinary Japanese short-grain table rice, not mochigome. Mochigome leads you toward okaki or arare, good cousins but not this cracker.
• •Keep the rounds 2 to 3mm thick. Thickness looks generous on the bench and feels punishing under the teeth. Senbei should crack cleanly, not fight back.
• •A suribachi makes quick work of the rice because its ridges pull the grains into a paste. A heavy bowl and potato masher will do the same job with a little more patience.
• •Brush the glaze as if you are staining the cracker, not bathing it. Shōyu should grip the surface and shine; pooled glaze turns soft and salty.
• •Humidity is the quiet enemy. If the crackers lose their snap, refresh them in a low oven and cool them fully before closing the tin.

Advance Preparation

• •The shaped rounds can be dried uncovered on racks in the refrigerator for up to 18 hours, then baked straight from cold. The refrigerator is safer than a warm counter and dries the surface well.
• •The shōyu glaze can be made 3 days ahead and kept refrigerated. Warm it briefly so it brushes thinly.
• •Finished senbei keep about 1 week in an airtight tin. Add a small food-safe desiccant packet if your kitchen is humid.

Frequently Asked Questions

Nutrition Information

1 serving (about 11g)