INGREDIENTS
4
eggs, separated, at room temperature
4
drops lemon juice or white vinegar (optional)
1/2 cup
+ 2 Tablespoons (5.3 oz; 150 g) sugar
1 tbsp
water
2 tsp
vanilla extract
1 stick
+ 2 tsp butter, melted (125 g)
3/4 cup
(4 oz; 115 g) flour
2 cups
milk, lukewarm (500 ml)