King Oyster Scallops

Scoring 28 recipes

• Lift one cut open with a fingertip: it parts through the skin and stops in the fat beneath, showing a pale wall at its base. Any cut showing red or fibrous flesh has gone too deep; any that has not reached the fat has left the skin tethered, and it will tighten under heat.
• The lines run parallel at even spacing, roughly a finger's width apart, each carried the full length of the face and stopped the same margin short of the edge. Sight down them: lines that converge, wander or crowd at one end cook at different rates and read as careless on the plate.
• Each line is one clean draw of the blade held at a slant, not a sawn or doubled track, and it leaves a bevelled lip standing slightly proud rather than a vertical slot. The surface should be dry and cold, near 4C (39F), when it is cut; worked warm and slack it drags, and the blade tears where it should part.
• After cooking the cuts have opened and set, each a clear gap with firm browned walls. Lines closed back to faint scratches were cut too shallow or too straight down, and the surface has shrunk over them instead of through them.
• The piece lies flat and true when it is set down, with no cupping through the middle and no lifted, curled edge. A bowed piece means the tightening surface was never released, so it pulled the whole thing up and left the underside pale where it stood off the heat.

Where it goes wrong The blade was pushed rather than drawn, through a surface left warm and slack, so it went past the fat and into the flesh. The cuts bleed as they cook and the juices flood the surface, so it steams instead of crisping: the lines gape into wet ragged trenches, the flesh between them dries into hard ridges, and the skin stays leathery and pale where it should have blistered and set.

Dashi 29 recipes

• It is clear enough to read the bottom of the pan through it. Cloudiness means it boiled, or the kombu stayed in past the first small bubbles, and neither can be strained out afterwards.
• Pale gold rather than brown, nearer the colour of weak tea. A brown dashi has been cooked too hard or too long and will taste of the pan rather than of the sea.
• The kombu came out before the water reached a simmer, and it is supple rather than slimy. A slippery surface on the sheet means alginates have started to leach, and the broth will feel viscous on the tongue.
• Strained without pressing. Squeezing the flakes or the kelp forces out bitterness and fine particles, and the difference is obvious in the finished bowl.
• Tasted alone it is savoury and faintly sweet with no fishiness and no bitter edge. Fishy means the katsuobushi steeped rather than settling; bitter means heat.

Where it goes wrong Heat, or time, or both. Kombu boiled gives up alginates and turns the broth slippery and faintly bitter; katsuobushi left to steep turns it sour and fishy. Almost every dashi failure is an excess of one of the two things the cook controls, and neither is recoverable once it has happened.