Tonight from 6-9:00 p.m. at Cervecería de MateVeza, located at 3801 18th Street in San Francisco, there will be a beer-tasting of a new collaboration beer. Here’s the story:

Samuel Adams and MateVeza will come together to celebrate and introduce their limited-release collaboration beer, Boston Tea Party Saison. The unique brew combines MateVeza’s signature ingredient — yerba mate tea — and Samuel Adams’ one-of-a-kind Kosmic Mother Funk (KMF).

After completing a Brewing and Business Experienceship, an extended craft brewing mentoring program offered by Samuel Adams, MateVeza founder Jim Woods teamed up with his mentor to create a unique collaboration beer. The Experienceship is offered to craft brewers as part of Samuel Adams Brewing the American Dream, a micro lending and coaching program available to food, beverage and hospitality small business owners as well as craft brewers.

Jim Woods and Samuel Adams brewer Dean Gianocostas in Boston on the day they brewed the collaboration beer, Boston Tea Party Saison.

Here’s their description of the beer itself:

Samuel Adams and MateVeza came together to brew a Saison, which is a farmhouse beer traditionally brewed in the autumn or winter for consumption during the summer for the farm workers. The final recipe combines MateVeza’s signature ingredient — yerba mate tea — and Samuel Adams’ one-of-a-kind Kosmic Mother Funk (KMF), a blend of wild yeasts and bacteria designed to give beers unique flavors. The bright and satisfying brew has a slightly earthy and deliciously fruity character with a hint of spice and a long dry finish.

If you’re in the city tonight, stop by and give the beer a try. See you there.

Chris Spinelli and Jon Mervine from Roc Brewing (who also did a similar collaboration beer, though their beer is ThreeNinety Bock), and in the middle Jim Woods, MateVeza, and Jim Koch, from Boston Beer.