Heat a large frying pan and sear the pigeon in a little rapeseed oil until the skin is evenly coloured. Remove from heat and remove the breasts from the pigeon. Once cooled put in the fridge until needed.
Heat a knob of butter in a large saucepan, add the spinach, wilt and season. Spread the cooked spinach out on a clean tea towel to cool, then squeeze the excess water out of the spinac