Lamb Sweetbreads with Peas

I first tasted this combination at Alastair Little’s restaurant in Soho some 17 years ago and remember how good it was. Sweetbreads are the thymus glands of the animal - found in the throat and near the heart, or at least that’s what they usually are. At the Abergavenny Food Festival a couple of years ago, I ordered lamb sweetbreads for a demonstration but was sent lamb’s testicles instead, as this is what they are called in that part of the world. I cooked them anyway and they went down a