Make the cake
- Preheat oven to 350 degrees.
- In the bowl of a stand mixer fitted with whisk attachment, combine egg whites, sugar, and vanilla, and whip slowly until mixture is combined and fluffy, about three minutes. Add salt and lemon juice, adjust speed to medium-high and whip until the consistency is slightly softer than soft peaks, about 3 to 5 minutes.
- Using a spatula, gently fold flour into the mixture until just incorporated and no dry streaks remain. Pour into an aluminum pan. Cook for 45 minutes, until the outside is light brown and a toothpick inserted into the cake comes out clean.
For the strawberries
In a small bowl, mix together strawberries and sugar, and allow it to macerate about an hour.
For the whipped cream
In bowl of a stand mixer fitted with whisk attachment, add cream. On medium speed, whip to soft peaks, slowly add the powdered sugar.