Flourless Chocolate Wave Cake

Name: Flourless Chocolate Wave Cake
Cuisine: World Cuisine
Ingredients: Neutral oil and sugar for the pan; 10 oz (283g) semisweet chocolate(preferably 66 to 68% cacao), coarsely chopped (1²⁄³ cups); ½ c neutral oil, such as vegetable or grapeseed (4 oz / 112g); 3 tbsp amaretto or dark rum (1.5 oz / 43g); 6 lg eggs (10.6 oz / 300g), separated; ½ c almond flour (2.1 oz / 60g), sifted if needed to break up lumps; 1 tsp Diamond Crystal kosher salt (0.11 oz / 3g); ½ c plus 2 tablespoons sugar (4.4 oz / 125g); 1 tsp vanilla extract