Speciation Artisan Ales has decided to start spring cleaning a little ahead of schedule by releasing four different beers that have been “sitting in barrels and/or stainless for quite some time.”

First up is Cross Fertilization, a golden sour “with unmalted wheat and dry hopped with aged Summit and Ultra hops”, according to the brewery’s website. There will be 942 750ml bottles of Cross Fertilization priced at $20 each with a six bottle per person limit.

Next is Melanocarpa, a wine barrel-aged golden sour with Aronia berries from the Holland, Mich.-based Tanglewood Winery. Melanocarpa is packaged in 750ml bottles priced at $24 with a three bottle per person limit.

In addition, the Comstock Park, Mich.-based brewery will be selling Montauk, a “modern interpretation of a Kvass style bread beer” that is the brewery’s first beer fermented from 100 percent wild sourced yeast. The 780 bottles were brewed in collaboration with Black Project Spontaneous & Wild Ales of Denver and 750ml bottles will retail for $15 each with a three bottle per person limit.

Last on the list for this weekend is Sympatric, a true wine-beer hybrid aged in wine barrels and conditioned on Seyval Blanc grapes from Berrien Domaine Vineyard. There will be a total of 395 750ml bottles priced at $24 each with a three bottle per person limit.

Allotments were available starting on Dec. 2 through Eventbrite and proxies are allowed with pickups starting at the brewery today.