From the information above I've gleaned that I could make a good spray starch by combining 25-50% liquid starch, e.g. Sta-Flo, with distilled water, a drop of liquid detergent to act as a surfactant to aid penetration into the fabric, and a couple drops of essential oil mixed with 2 oz. of cheapest vodka or Everclear only if fragrance is desired in the mixture (which in my case it is not, so I'll save the vodka for the OJ). I'll be trying this very soon on the cheap muslin I just bought.