Crust - Mix melted butter, flour, and 7g sugar, spread on the bottom, and freeze.
Filling - Soften cream cheese at room temperature (can use a double boiler slightly).
Mix cream cheese and sugar with a spatula.
Add room temperature eggs in two additions, mixing each time.
Add a little lemon juice and vanilla oil.
Pour the filling over the set crust.
Bake in a preheated oven with a water bath at 150~160°C for 50 minutes.
Let cool slightly, then freeze in the pan for more than 6 hours, then remove from the mold.
Store in an airtight container for up to 5 days.