1. Prepare caramel
In a medium saucepan, preferably a stainless steel one so you can see the caramel as it turns golden, combine sugar, water, corn syrup and lemon juice. Bring to a simmer without stirring over medium high heat. Use a spatula to wipe the sides of the pan clean to avoid crystallization.
Continue to cook swirling the pan gently until large, slow bubbles appear. Caramel can go from golden to burnt really fast, so be attentive to the color. Also, be careful when handling caramel since it’s about 300 degrees and will burn you if it touches your skin.