Strawberry Letter 23 Sour IPA DuClaw Brewing is a Sour IPA by style.Brewed with Lactose, Mosaic Lupilin Powder, and fermented on top of ripe Strawberries, this brew has just enough hop bite and subtle strawberry sweetness to shine through its overall tart character. This craft beer is 7.1% ABV and 12 IBUs. In this craft beer review, we will take a look at the color, smell, and taste.