1994 Evan Williams A 1994 Even Williams single-barrel bourbon is among the selections on Bourbon's new half-price menu on Wednesday nights. (Photo by Fritz Hahn/The Washington Post)

Drinking rare bourbon is about to get a lot cheaper in Adams Morgan. Beginning tonight, Bourbon launches "Half-Price Reserve Whiskey Night," with hard-to-find bourbons, ryes and American whiskeys for half their usual prices every Wednesday from 5 p.m. to close.

Owner James Woods has compiled a list of 40 whiskeys from the bar's huge library: There are single-barrel Evan Williams bourbons from 1994 to 1996, small-batch bottled-in-bond and cask-strength selections from William Heavenhill, three different WhistlePig expressions, and a trio of barrel-proof Redemption ryes of various ages.

Woods describes this as an opportune learning experience: The menu includes five of Diageo's "Orphan Barrel" bourbons, which spent between 15 to 26 years in barrels. While bottles sell from $70 to at least $250 in stores, most are available for $7 or $8 an ounce at Bourbon. A flight of half-ounce pours of all five, including the 26-year-old Old Blowhard, costs $35.

Other flights include three one-ounce pours of 12- and 13-year-old WhistlePigs for $20, and the chance to try pours of six-, seven- and eight-year-old Redemption ryes side-by-side for $15.

And while yeah, you can geek out over comparing bourbons, you can also just try some really good whiskey for an affordable price: The Jack Daniel's Sinatra Select, which sells online for around $150 per liter, is $13 per ounce or $25 for a stiffer pour; the fantastic Maker's Mark Cask Strength is just $7 per ounce.

In addition to the all-night bourbon menu, which you can see below, happy hour runs from 5 to 7 p.m. and includes $2 off all 20 draft beers and $4 off house cocktails.

Bourbon: 2321 18th St. NW. www.bourbondc.com.

Not a bourbon fan? Here are a few other bars that offer discounted beer, wine or spirits all night long – and don't forget about our list of bars with half-price happy hour.

Proof
The "Sunday Funday" wine list at Proof, launched in September, features 100 bottles from Proof's vaunted list at half-price from 5 p.m. to close on Sundays. (There are usually at least four pages of the menu to browse.) Don't miss the food specials, which include a free selected appetizer or dessert with the purchase of an entree.
775 G St. NW. www.proofdc.com.

Brookland Pint
Large-format bottles of beer – that's 22 or 25 ounces – are sold at a 25 percent discount on Mondays, including Jolly Pumpkin's Biere de Mars and Goose Island Lolita. Deals run from 11 a.m. to 2 a.m. (If you prefer wine, bottles are half-price all day Wednesday with the purchase of an entree.)
716 Monroe St. NW. www.brooklandpint.com.

El Chucho
On "Tequila Tuesdays," the Columbia Heights restaurant takes 20 percent off its large selection of tequilas and mezcals.
3313 11th St. NW. www.elchuchodc.com.

Bourbon Half Price Whiskey List