One of my recipes called for reduced-fat or fat-free vegan mayo. I found reduced-fat Vegenaise, and everyone says Vegenaise is the best. But, in part because I knew I was over my food budget for the week, I couldn't stomach paying $4.79 for it.Instead I made the fat-free vegan mayo from The Happy Herbivore Cookbook. It called for the above ingredients I already had and took about a minute to whip up in the blender. It turned out creamy, tangy, and really great in my recipe. Maybe I'll try Vegenaise when I'm under my food budget, but for now I'll make my own.
March 16 Update
I realized after Food Feud noted it that Trader Joe's Dijon mustard is really spicy. I made this again last night and used regular Dijon. I liked it much better.