Black Walnut Alternative

I love making treats with black walnuts, but they're hard to find in my area. So I put English walnut halves in a pint jar, sprinkle on a teaspoon or so of black walnut flavoring, tighten the lid and let them sit for several days. When I use them, they have the same great flavor as real black walnuts. —Jennie Grimm, Selah, Washington