In this episode of For Flux Sake, I dig into a question I hear all the time: is there actually a difference between “real” ash glazes and the so-called “fake” ones that use refined materials to mimic ash? I walk through what ash is doing in a glaze (chemically and practically), why ash is such a moving target from batch to batch, and what that variability means when you’re trying to repeat a surface. The big takeaway is that “real” ash brings a messy, variable material into your glaze bucket—sometimes that’s the whole point, and sometimes it’s exactly what you don’t want. I also get into a very studio-practical problem: what happens when you start mixing brushing glazes and dipping glazes on the same pot. I talk about thickness, binder systems, and why layering can go sideways even when the recipes look compatible on paper. And we wrap up with particle size—especially with colorants—and how grind, dispersion, and settling can change melt, color response, and surface quality more than people expect. It’s a classic combo of glaze chemistry and “here’s how to not ruin your next firing.”