Asparagus Souffle
["2 oz. (4 Tbsp.) butter", "6 Tbsp. flour", "1 tsp. salt", "1 1/2 c. lukewarm milk", "2 cans (10 1/2 oz. each) asparagus tips", "6 eggs", "1 Tbsp. fresh lime juice"]
["Preheat oven to 350\u00b0.", "Grease a 2-quart round glass baking dish."]
["butter", "flour", "salt", "milk", "eggs", "lime juice"]