Every Sunday, the cocktail glass half fills up with coffee.

Amor y Amargo's Double Buzz program, a unique four-hour-long cocktail service offered every Sunday afternoon, is celebrating its second anniversary in April. This innovative concept, which specializes in the marriage of coffee and spirits, has been a hit among New York's cocktail enthusiasts.

At the helm of Double Buzz is Amanda Whitt, a skilled bartender who also works at Box Kite, a nearby coffee-food-drink darling. Whitt brings her coffee expertise to Double Buzz, preparing her coffee "Japanese-style" pour-over, brewed at a concentrated strength over ice.

The Double Buzz program at Amor y Amargo uses professional barista tools for brewing coffee, ensuring the perfect cup every time. The coffee is brewed at the right temperature for mixing in cocktails, a key factor in creating the layered flavours that unfold from day to night in the cocktails served at Double Buzz.

The menu at Double Buzz features drinks inspired by its regular cocktail list, classic cocktails, tiki drinks, and the natural qualities of the changing coffees. One example of a cocktail served is The Flamingo, made with Ethiopian Guji coffee, tequila, cocchi rosso, and apple bitters. Another popular choice is The Avian Accomplice, a coffee-updated version of the Jungle Bird tiki classic, made with Ethiopian Yirgacheffe coffee, light and dark rums, Campari, Angostura bitters, and a twist.

Double Buzz specializes in using bitters for its cocktails, with an estimated 70-100 different types of bitters available. The John Patrick Mason cocktail, made with a tangy Colombian coffee from Finca Alcatraz, blended Scotch, Averna, Fernet, birch bitters, and is particularly harmonious with the flavor profiles of washed Central American coffees.

The humble set-up at Double Buzz includes two electric kettles, a burr grinder, and two Japanese dripper cones. These tools are stored at the end of Double Buzz service each Sunday.

Former bartender Natalie Czech, who has a coffee background, helped create Double Buzz. The Double Buzz program at Amor y Amargo uses a concentrated strength pour-over method for brewing coffee, adding value to daylight hours at Amor y Amargo.

Double Buzz was partly created to add value to daylight hours at Amor y Amargo. It has been successful in doing so, providing a unique experience for coffee and cocktail lovers alike. As it celebrates its second anniversary, Double Buzz continues to push the boundaries of what can be achieved when coffee and spirits come together.