It's a good option to use different utensils for preparing salves and creams compared to cooking. I've two small heatproof glass pots, tiny wooden spoons, rubber spatulas and funnels, a small wire whisk, measuring spoons, a food scale, mortar and pestle, and a coffee grinder reserved for herbs. I use your family blender, even so wash it it very hot, soapy water both before I the idea. And don't f