Regarding the Quilter's Moonshine recipe:
The recipe that has liquid starch in it is a starch product.
The recipe that has vodka in it is NOT a starch product. It is nothing more than a lovely scented laundry spray. It helps release wrinkles but it does not starch your fabric.
The process of fermenting and distilling removes starch from vodka. When yeast is added to the raw ingredients, it eats the starch and converts it to alcohol. After fermentation, the distillation process removes impurities. The remaining product does not contain any starch.