Tres Leches Cake (Three-Milk Cake)

• unsalted butter, to grease
• all-purpose flour, to dust
• 7 oz sweetened condensed milk
• 7 oz evaporated milk
• 7 oz whole milk

Cake

• 4 large eggs
• 4 oz sugar
• 4 oz all-purpose flour
• 1 tbsp vanilla extract, natural
• 1 pinch salt
• 1 tsp baking powder

Whipped Cream

• 1 ½ oz sugar
• 18 oz heavy whipping cream, chilled