Make lime crème pâtissière (confectioner's custard) as for 300 g
confectioner's custard (crème pâtissière, or french pastry cream), but with these special proportions: 30 g
caster sugar and 30 g
cornflour, and infuse milk with finely chopped zest of 1
lime before boiling.
Then, when cream is cooked, beat into it juice of 1
lime, and if desired 3 drops food colouring (green).
Leave to cool covered to prevent skin forming, or whip during cooling from time to time.
Set aside your lime crème pâtissière.