Combine sugar, water, corn syrup and salt in a glass casserole dish. Cover with saran wrap and microwave on high for 5 minutes. Remove from microwave and take off saran wrap. Stir well and return to microwave uncovered. Cook on high for another 4 to 5 minutes until reaches hard ball stage when a little is dropped in cold water. Remove and cool about 4 minutes. Beat egg whites until stiff with mixer.
Pour sugar mixture over egg whites beating constantly with mixer until mixture starts to lose its gloss and holds together. About 4 or 5 minutes. Stir in vanilla and nuts. Drop by teaspoonful onto wax paper. Makes about 25 pieces depending on size you make them
To clean glass bowl you used in microwave soak in warm soapy water immediately after emptying sugar mixture.