▷Ingredients（φ15cm）:
■Tart
15g walnuts
30g powder sugar
pinch of salt
115g cake flour
60g unsalted butter
25g egg
■Cheesecake
200g cream cheese
45g sugar
6g corn starch
1 egg
120ml heavy cream
1 tbsp lemon juice
lemon zest
■Lemon sauce
1 egg
50g sugar
50ml lemon juice
lemon zest
40g unsalted butter
80ml heavy cream
