I'm insanely late to this thread, but in case it's still helpful I just ordered some from Rising C Ranches at RipeToYou.com. They're selling them in 5lb boxes for $40, which sounds like a lot of bergamots to me, so I emailed the proprietor and asked if she could just add a bergamot or two to my box of Seville oranges so I could give them a try, and she was very nice about it. I've never tried a fresh bergamot before, so I'm really looking forward to it. I was going to make a batch of part Sevile part bergamot marmelade, but if anyone has other suggestions I'd love to hear them!
with 2 it's not enough, but Bergamot Curd (made exactly like Lemon Curd) is to die for. You can use the zest and juice to make ricotta cheesecake. If you've never had Bergamot: it's extremely bitter. You can use the zest and juice in any type of cake, from angel food to pound cake. In France I had Bergamot ice cream which was awesome.
Anyway, thanks for the tip. 5 pounds is a lot, but I think I'm going to splurge. Thank you so much!
The citrus fruit or the herb?
The citrus is pretty obscure - you might try calling Italian or gourmet produce purveyors. I'd try contacting Frieda's Finest. They might be able to point you in the right direction.
If it's the herb (aka Monarda Didyma) - Any good plant nursery can order it for you if they don't normally stock it.