https://www.nytimes.com/1999/01/17/magazine/food-good-morning-vietnam.html?searchResultPosition=1
1. Separate the rings of shallots and place them on a baking sheet covered with paper towels. Allow to dry out for at least 6 hours or overnight. (my experience tells me you can dry them out for less time)
2. Heat the oil in a skillet over medium-high heat. When very hot, add the shallots and fry, stirring constantly, until golden brown, about 5 minutes. Drain on paper towels. Store in an airtight container for up to 3 weeks.
3. Save the oil!! It makes AMAZING vinaigrette!
Yield: 1 cup.