I know this is a relatively small culprit in the grand scheme of things, but I figure there are people out there who would want to know about this (lest the Vegan Police remove your vegan powers).
When wines are freshly fermented, they typically have particles suspended in the liquid, like tannins, yeast, and proteins, giving the wine a cloudy look. Over time, these will settle on their own […], but that can be a slow process. So, winemakers often use the fining process to clarify their wine, making it a nice, clear, non-cloudy color. Certain proteins are added to the wine and effectively latch onto those cloudy particles before dropping to the bottom of a wine barrel, where they can be filtered out. It’s these proteins that are the culprit here: The most commonly used fining agents are milk or animal proteins (specifically casein and gelatin), isinglass (a gelatin derived from fish bladders), and albumin (from egg whites). […]
There are vegan-friendly fining agents, like activated charcoal and bentonite […]. To confirm whether a wine is vegan, you may need to contact the winemaker or company directly. You can also consult a certification organization called BevVeg, which lists legitimate vegan wines. Alternatively, if wines are labeled as “unfined” or “unfiltered,” this means that no fining agent has been used, so it should be a safe bet.
Veganism is about reducing one’s own animal exploitation as much as is practicable, and because there are third-parties who track which alcohols use animal products, it should for most people be practicable to cut out non-vegan alcohols. On the other hand, with crops grown on a farm, it’s not really practical to my understanding to avoid animal manure. If you do use cannabis and live in a place where growing your own is legal, then sure, you can grow it yourself, but you’re never really going to fully and practically avoid animal manure without systematic change.
Manure will always be waste though. We actually have a pretty big unseen crisis, that makes us dependend on animals if we want to fertilize organically.
Our sewage is too filled with heavy metals, drugs, hormones and antibiotics, as that we could use it to fertilize fields. In germany this is prohibited by law.
So we need Animals, which is a pretty insane idea as the food that humans eat and shit out will always be lost in the process, a leaking circuit.
Small scale recycling is a possible solution.