Peanut or good-quality vegetable oil for deep frying
1pound bean sprouts (about 4 cups), rinsed and drained well
1/4cup soy sauce
2cups all-purpose flour, rice flour, or cornstarch
Salt and pepper
1cup chopped roasted peanuts for garnish (optional)
1cup chopped fresh cilantro for garnish (optional)
Minced fresh chile (like jalapeño or Thai), red chile flakes, or cayenne to taste for garnish (optional)
Lime wedges for garnish (optional)
Instructions
Put at least 2 inches oil in a deep, heavy saucepan over medium-high heat; bring to about 350°F on a deep-frying thermometer. Cover a plate with paper towels, a clean kitchen towel, or brown paper.
While the oil is heating, put the bean sprouts in a large bowl, drizzle the soy sauce over them, and toss gently to moisten all. Add the flour, a few spoonfuls at a time, and toss until the sprouts are evenly coated.
When the oil is hot, add about 1 cup or so of the bean sprouts. Turn and stir them occasionally with a slotted spoon until crisp and golden on all sides, 3 to 5 minutes. Transfer to the plate to drain. Sprinkle with salt and lots of black pepper while hot. Repeat until all the sprouts are done. Serve immediately, garnished with the peanuts, cilantro, chile, and/or lime wedges as you like.