Part 4/10:
In a large bowl, mix an additional 100 g (1/2 cup) of white granulated sugar with 1 1/2 tablespoons of warm water. Ensure the water is not too hot, just lukewarm. Coat the sugar with the water using a spatula. Then, add the five egg yolks and two teaspoons of vanilla. Mix at medium-high speed until the yolks are pale and slightly thickened, about two minutes. Slowly add in 30 g (2 tablespoons) of unflavored vegetable oil and mix at a low speed until well combined.