These come together really quickly, especially if you leave a stick of butter in the freezer to use for grating. If not, put the two tablespoons of butter in the freezer at the beginning of prep so it can be ready to grate into the flour mixture part way through the recipe. I like the combination of caraway and thyme or currants, orange zest, and thyme but I think currants and caraway would be an excellent combination as well.