Add 45g egg yolks into a large bowl, add 36g granulated sugar, and whisk until the egg yolk color turns lighter. Add 15g cake flour and whisk until smooth with no lumps. First add one-third of 210g milk (about 70g), mix well, then add the remaining milk and mix well. Add 2g vanilla extract, mix well, then strain once through a sieve into a small saucepan.
Watch out
The flour must be completely mixed with no lumps before adding milk, otherwise it will clump.






