Gambas al Ajillo (Spanish Garlic Shrimp)

Gambas al Ajillo (Spanish Garlic Shrimp) Recipe

Inspired by Kenji Alt's recipe from SeriousEats.com:
http://www.seriouseats.com/2014/03/sp...

1 Lb shell-on shrimp (21-25 per pound)
4 large garlic cloves
3/4 tsp diamond crystal kosher salt (or to taste)
1/4 tsp sugar
1/2 cup olive oil
pinch of red chili flakes
squeeze of lemon
chopped parsley for garnish