Happy Passover! I'm glad you posted this, Anne - I've sent e-cards to Jewish relatives (including my eldest niece, her father, paternal grandparents, half-sisters and "former" step-mother, plus my husband's cousin and his family in Tel Aviv), but wasn't sure what the correct greeting was. My niece is very into her roots, but is often uncertain about what is "politically correct" (no wonder, having grown up in a multicultural, very ecumenic family - it's not unusual for relatives to send a card saying "Merry Kosher Christmas!). It's a bit complicated - we've reached the point where we only offer poultry or lamb, and dairy products on separate plates, when we have guests. If you live in the U.S., it's easy: any products marked "U" or "K" are acceptable for Jewish/Moslem guests, and if you avoid veal/beef products, you won't insult Hindu guests. The problem is that the products here in Germany aren't marked.