Boil sugar, syrup, butter and salt for 2 minutes on stove…add soda, stir.
Pour over popped corn which has been placed in a large paper bag.
Microwave on high for 1 ½ minutes. Remove and shake well.
Microwave again for 1 ½ minutes on high. Remove from microwave, shake well again.
Cool and serve. (I like to add peanuts or other nuts to the caramel before pouring over popped corn.)