To make this salty nutty brittle, boil sugar and corn syrup at medium flame for 5-7 min.You can see the color changing to light brown at edge.Add salt,melon seeds and chopped pistachio to it and stir once.Cook for 4-5 min till you get a brown thick mixture.To check whether its done or not , do a small test. Drop a liquid ball with a spoon into a glass of cold water.If it immediately thicken and form hard ball in the water than your cooking is done.