Apparently I thought so as well because I've managed to make four of them so far compared to two for everything else. Presumably that means I can do it twice per day. Decent coffee if you've found any or just gold will do. There's a spell in my notes that needs to be cast on a gemstone worth at least 100gp - though given we're only going to be here a week I should probably think about whether or not it's going to be more worth it to just keep the gemstone or the gold.