Today I had my best ice cream in DC to date - Tartufo Limoncello at CFF. It's not on the website but is on the board at the restaurant. Heaven on earth! Worth an after lunch trip (or mid afternoon - call for closing time) even if your not having a meal there. You can get it w/ the lemon bread pudding ($5.95) or by itself ($3.95). Sounds expensive (especially for CFF) but cost less than it would at other fine dining places that might have it. Yum! Go go go!