Ingredients

1/2 pound asparagus, trimmed

1 medium red onion, sliced thin

1 1/2 tablespoons unsalted butter

a pinch of sugar

2/3 cup coarsely grated Gruyère

1 tablespoon minced fresh tarragon leaves, or to taste

4 large eggs, separated

2 tablespoons all-purpose flour

Description

Can Be Prepared In 45 Minutes Or Less.

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