INGREDIENTS
2
medium russet potatoes
Sunflower or vegetable oil, for frying
Fine sea salt
1 tbsp
unsalted butter
1
small onion, finely chopped (about 1/2 cup)
2 tbsp
all-purpose flour
1 cup
whole milk
4 oz
blue cheese, crumbled (about 1 cup crumbled)
1/8 tsp
cayenne pepper