Ingredients: to serve four
1.5 lb / 700g prepared leeks
4 oz / 100g softened butter
6 medium eggs, separated
salt to taste
fresh ground black pepper to taste
2 table spoons finely chopped parsley
Slice the oranges and simmer them gently in their own juice until the peel is soft. You may need to add a little water. Liquidise the cooked orange.
Split and chop the leeks .
Cook the leeks in hot sizzling butter until golden and soft.
Mix the leeks with the oranges.
Separate the egg yolk and white.
Beat in the egg yolks one at a time to the leek and orange.
Add the salt, pepper and parsley.
Beat the egg whites with a pinch of salt until stiff.
Fold half the egg white into the mixture and then fold in the other half.
Gently spread the mixture in a shallow greased tin.
Gas mark 4 350°F 180°C
Bake for 25 minutes.
Sprinkle with grated cheese and top with yogurt.