Hop Grail

Stubborn pHool

Iron Furnace BrewingFranconia, NH
  • Fruited Sour
  • 6% ABV

Where this comes from

From Iron Furnace Brewing's website, first seen July 17, 2026. No label filing.

Last seen October 22, 2026.

Had it

In their words

This version of our sour is made with mango and pineapple. While the pH in the name (pronounced "fool") gives tribute to the acidity required to brew this beer, there are different opinions as to whom stubborn refers. You be the judge. Lactose and yeast come together to make it sour.

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