You have to boil cornstarch to disperse it. Arrowroot can disperse at lower temperature but it's kind of obscure (around $3–5/lb but lasts a while). Powdered su

You have to boil cornstarch to disperse it. Arrowroot can disperse at lower temperature but it's kind of obscure (around $3–5/lb but lasts a while). Powdered sugar might be a more practical option?