This vinaigrette includes alcohol (ale) that is not 'cooked out'. If you wish to omit the alcohol or simply change up the recipe, the restaurant recommends using the same amount of flat ginger ale or white grape juice.
This recipes begins with cooked pearled barley and quinoa; plan ahead to cook it in advance, according to package instructions.
The vinaigrette will make more than will be needed for serving with the barley quinoa cakes. Extra can be stored in the refrigerator for a few days.