Bring 2 quarts of water with 1 -2 star anise to boil.
Add frozen edamame and cook for 2-3 minutes, try one to see if you like the texture, don't overcook. Once it's done, drain and set aside.
Add 1 tablespoon of sesame oil in the same pot while it's still hot, then add minced garlic, Sichuan peppercorn, sugar
Stir several times, then add Edamame, dried chili pepper, salt and black pepper and mix well.
Chill in the fridge for 30 mins before serving.