My other half was out tonight so I was cooking for myself - I invariably seize upon this opportunity to indulge in the forbidden fruit of offal. She does not like it, although recently she has tolerated some. Her adventuring will extend to stuff like chicken liver parfait, and nicely done calves liver, but really do not yet embrace the kidney. Amusingly, she once unwittingly ordered some pork rognones in Belgium (annoyingly I was not present to chortle and then swap plates), sitting there with watering mouth until the two bulging roasted pillows were plonked down. Commendably, she ate a whole one. I understand how many people can't get on with kidney's abrasive honk - so revealing of its function - nor it's mouthfeel, verging between a wobbly splat and a rubbery squeak. But I can.
Lamb's kidneys are tender and cheap. I pinched the idea from here to do them sliced thinly, scored like squid and seared hard in a wok - apparently this is called the Huo Bao technique, which means something like "fire-exploded". Who knew?
I marinaded the raw, prepared kidneys in equal parts dark soy and chinese rice wine for half an hour.
I blanched some greens (footnote about those below) and some rice noodles, and finely chopped a red chilli, and clove of garlic. I mixed a teaspoon of cornflour in some cold water in a mug. The dish then comes together quite quickly:
The chilli and garlic go into very hot oil in a wok. Within seconds (or it burns), a slotted spoonful of kidneys is pulled out of the marinade and into the wok and tossed around. These are cooked over a high heat for a couple of minutes and do curl like squid. These are removed and the next batch done (mine only took two batches).
Then with the kidneys set to one side, the remainder of the marinade is chucked in with a little water, brought to the boil, add the cornflour, thicken, then add all the kidneys, greens and noodles and toss. Garnish with a spring onion.
It was a fine and tasty dinner but if I did it again, I would try to drain the kidneys a little more thoroughly after marinading. They need to char a little more on the outside, whilst retaining that lovely tenderness. Also I'd serve it with plain, snowy white jasmine rice, and use a sweeter green such as pak or bok choi.
Note on the greens: They caught my eye as I cycled past the Portugese grocer on South Lambeth Rd. They look like PSB but a paler, more vivid green and a different leaf shape. I thought they might be sprouting mustard greens or something like - they definitely tasted quite pungent with a pleasant, bitter undertone.