CIA's Grilled Sweet Potato Skewers with Curried Onion Dipping Sauce

soak skewers in water (15 min)
boil water in big pot, add salt
4 sweet potatoes, cut into about 1 inch cubes
put into boiling water till firm not crunchy
put potatoes onto skewers

lather with a mix of:
1/2 tbsp salt
1 teaspoon fresh black pepper
1/2 cup olive oil

grill potato skewers until golden brown with some grill marks, turn once

Serve with Curried Green Onion Dipping Sauce:
3/4 cup sour cream (optional, replace half with creme fraiche)
3 tbsp curry powder
1 tbsp dijon mustard
salt and ground black petter to taste
1 teaspoon cumin seeds toasted and ground
1 teaspoon nigella seeds
3 tbsp scalliions or chives
3 tbsp flat-leaf parsley, minced
3 tbsp cilantro, minced

Stir together
use up to 3 days