I'm breaking in a relatively new briar pipe. I know how important it is to smoke to the heel so as to get a good even cake built up. However, sometimes I find the tobacco gets a little too harsh for my tastes near the bottom of the bowl. I don't know if this is normal or not, but often I'll just stop smoking at whatever point it no longer pleases me. Usually it's near the very very bottom. When I tap out the ash, I find what seems more dottle than I feel I should expect. It's not a lot, but I assumed that there should be little to nothing left at the bottom. And then I realized-- I have no idea how much 'dottle' is acceptable, especially when breaking in a pipe. How much is normal? Or at least, how much is tolerable without being counted as waste? Does anyone have a picture of how much dottle they tend to leave (weird request, I know).