Firstly I'd like to start by saying I'm not vegetarian so please excuse any ignorance I might be showing here.
I'm moving in with two friends on Friday and one of the lads is a vegetarian, and his long-term reasonable-distance-away girlfriend is a vegan so will occasionally be staying with us.
I've been out to buy some wine so we can toast to the new house, and upon texting the vegetarian housemate to tell him this he asked if it was vegetarian.
At first I thought he was pulling my leg (wine being grapes of course) but then I looked it up and it turns out that in a lot of European wine they use animal products in processing it.
Luckily I've found some vegetarian/vegan wine so that particular crisis is over, and more of the other wine for me
Are there any other seeming harmless products I should be aware of before putting my foot in it again??