It’s nothing like spinach in the mashed potatoes. Adding a boost of fiber to home-baked goods, even sugary holiday treats, is easy with a new all-purpose flour. Flourish — made from a strain of white wheat, with a naturally high fiber content, grown by farmers in various locations and processed by Bay State Milling — provides 24 grams of fiber in a cup, compared with an average 3.4 grams for regular all-purpose. The good news is that Flourish performs like regular unbleached all-purpose flour in pie crust, the essential test, and in poundcake. The downside is that it’s expensive.

Flourish Fiber from the Farm, $22.49 for five pounds,

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