Simple, but sweet. I especially like the idea of being able to brew Rum and Gin. I'll have to remember to try this.
However, it does not seem fitting for a fantasy/medieval setting to include rapeseed. The plant is a weed and insects won't even eat it. Several decades ago, when rapeseed products were first introduced to the market, people got sick. They found out that it contains a toxin and they stopped using it for a while.
Yes, we do see rapeseed oil in a lot of products today. But they
genetically altered the plant (now called "Canola") to remove the toxin. I
highly doubt dwarves have that capability.
BTW: Your file listing on DFFD is missing a link to your forum thread. Most DFFD listings put the link to their forum thread in their "Home" page field.
A forum link is an appreciated time saver. Some of us search for new mods via DFFD, rather than through the forum. But the forum thread often has a lot of detailed info that the DFFD file listing lacks. And, sometimes, players will want to give the mod creator feedback or ask a question.
