Boil water in a pot, then add the spicy ramen noodles and dried vegetable flakes. Boil the noodles for 1-2 minutes longer than the package instructions.

While the noodles are cooking, combine the ramen soup base, soy sauce, vinegar, and sugar in a microwave-safe bowl.

Microwave the sauce mixture in 20-second intervals for a total of 1 minute and 30 seconds to completely dissolve everything.

Add just under one cup of cold water (about 150ml) and a lot of ice to the sauce bowl to make the cold broth.

Once the noodles are cooked, drain them and rinse thoroughly under cold water. Add the rinsed noodles to the prepared cold broth.

Optionally, garnish with sliced green onions or peppers before serving.