Starting in v0.13.1, you'll be able to craft potions in batches of 10 if you have the ingredients. This was something asked for quite a lot in the v0.12 feedback form. I initially thought about making it so you could craft an arbitrary amount of potions, using a slider input sort of like the way transmutation works, but I wasn't sure how to make that work without totally remaking the UI, so this is what I settled on. I think it's unlikely you'd ever want to make more than 20 or 30 potions at a time, and I also think it's not to arduous to make less than 10 one at a time, so a batch of 10 seems like the best option for now.
If you don't have enough ingredients, the option to make 10 potions just won't appear. This screenshot doesn't really do a good job showing that because my test save has like gallons and gallons of everything.
Not the most exciting change, but I'm not quite ready to show off the new major activity yet. I hope to be able to show that to you guys this weekend.
Version 0.13.1 will come out next week! I'll announce a specific date soon.