Chinese potato salad

Ingredients:

5-6 medium potatoes, about 2 1/2 pounds
4 slices bacon, well-cooked and crumbled
3/4 cup chopped bok choy
1 red pepper, diced
1/2 cup chopped green onion
1/4 cup chopped cilantro
Sauce:

1 1/3 cup mayonnaise
1 tsp sugar
1 tbs soy sauce
1-2 tsp sesame oil
1/8-1/4 tsp hot mustard powder
1/8 tsp salt

Preparation:

Boil the potatoes until cooked but still firm.
Cut into potato salad-sized chunks.
Mix the ingredients for the sauce together, using more or less sesame oil and hot mustard according to taste.
Put all solid ingredients together in a large bowl.
Add the sauce. Mix and serve.