Ever wondered what’s in those high-octane concoctions that make for memorable — or rather unmemorable — Friday nights? Learn from the pros tonight, as Mantra (52 Temple Place, Boston, 617.542.8666) and the On Your Feet Project present one class you definitely won’t be dozing through: Cocktails 101. The Boston Shaker’s Adam Lantheaume will ply you with drink samples and appetizers before teaching you classics like a dirty martini and a French 75. Thirsty for more? Mantra’s cash bar is more than happy to help. Tickets are $20 in advance and $25 at the door, with all sales benefiting the West End House Boys and Girls Club. The organization provides after-school opportunities for Boston’s youngsters, so you can feel proud of each glass you knock back. (Don’t worry — we won’t keep track.) Tickets for the event, which runs from 6 to 9 p.m., can be purchased at http://oyfp.org/BOS.
