Oh, absolutely. Sitri plays nice with other entities, yes. I used to use his assistance along with Sallos and Dantalion and it worked like a charm to get sexual attraction and genuine emotion.
Here’s a thread about offerings for him:
Mostly very sensual things, naturally. If you set a chocolate or other sweet food item out I’d recommend using a sealed container cuz, y’know, ants. Yes the offering can still be taken through a container, just dispose of it by burying it after about 2 days (I usually just wait one honestly). I have made this mistake before absentmindedly lol it was kind of gross.
Honestly I mostly just give water to entities for convenience and sanitary purposes. I’d like to give liquor more often (very common preference for entities), but I don’t really consistently have access to it.