I Refuse to Share My Expensive Condiments With My Roommate

I buy specialty hot sauce, high-end olive oil, and artisanal ketchup. These aren't cheap — my hot sauce is $18 a bottle. My roommate Kyle helps himself freely. I asked him to stop and he said "it's just condiments, stop being weird." I started keeping them in my room. Now Kyle says I'm being petty and "creating a hostile living environment" because he has friends over and I have to bring my sriracha out of my bedroom like a goblin. He says condiments are communal by default and I should either buy cheaper ones or share. I say I should be allowed to enjoy nice things without subsidizing his meals. He could buy his own bottle — he just doesn't want to spend the money.