How to make Sweet Potato Mont Blanc Tart

This time, I made a special tart that lets you enjoy the deliciousness of sweet potatoes!
It's really, really delicious, so please try making it!
【Sweet Potato Mont Blanc Tart】
〈Sweet Potatoes〉
2 sweet potatoes
Salad oil to taste
2 tablespoons mirin (sweet cooking rice wine)
80g granulated sugar
A pinch of black sesame seeds
〈For the tart dough〉
60 g unsalted butter
50 g powdered sugar
1 egg yolk
110g flour
30g almond powder
〈Purple sweet potato creme d'amande〉
30 g unsalted butter
30 g powdered sugar
30g whole egg
30g almond powder
30g purple sweet potato powder
Bake at 180℃ for 30 minutes.
〈Vanilla mousse〉
1 egg yolk
20g granulated sugar
3 g gelatin
2 g vanilla bean
75g milk
75g fresh cream
〈Sweet Potato Cream〉
250g sweet potato paste
35g granulated sugar
50g fresh cream
15g melted butter
〈Decoration〉
Fresh cream
fresh thyme