in the United States and Canada, Carapils refers to Briess’s product, while the very same term signifies the Weyermann product elsewhere. If you’re looking for the Weyermann product in North America, you have to seek out Carafoam. You’ll also hear these products generically called dextrin malts, although that’s more true for Briess Carapils than it is for Weyermann Carapils/Carafoam. Here’s why.
The Carapils that Briess malts is a true caramel malt. Briess notes on its Carapils spec sheet that “Carapils® Malt is devoid of enzymes and can be steeped in hot water or mashed.” Added to an extract or all-grain grist, Briess’s Carapils delivers unfermentable sugars (dextrins) that increase body and improve head retention. It’s really just the lightest malt in a whole spectrum of caramel malts that starts with Carapils and goes all the way up to Caramel 120 and higher. The name Carapils just lets you know that it’s as light in color as a typical Pilsner malt, about 1.5° Lovibond. Briess recommends that brewers use Carapils sparingly, up to about 5 percent of the grist by weight.
Weyermann’s Carapils/Carafoam, on the other hand, is a bit different. First, it’s a touch darker, in the 1.5–3.0° Lovibond range. And while Briess admits that its Carapils has no enzymatic potential, Weyermann’s product actually has a fair amount of diastatic power, to the tune of as much as 100 to 150 on the Windisch–Kolbach index, which is in the neighborhood of 35–45° Lintner. That’s right at the practical limit at which a malt can fully convert itself, which means that the Weyermann product can be used in relatively large proportions, more like a base malt than a caramel malt. Indeed, Weyermann notes that its Carapils /Carafoam can represent as much as 40 percent of a grist by weight, a percentage that would be far too high for a normal caramel malt. Like the Briess product, Weyermann Carapils/Carafoam contributes long-chain sugars that enhance head and improve body, but it can make up a much larger proportion of the malt bill.
So, here’s the bottom line. Briess Carapils is a caramel malt that can be steeped or mashed, while Weyermann’s Carapils/Carafoam is more of an undermodified Pilsner that should probably be mashed to avoid haze issues. In practice, if you stick to percentages under 5 percent, you can get away with steeping the Weyermann product just as you would Briess’s.