When you will brew the vinegar, there will be different shapes of mold films coming on the top, so don't worry, wild yeast in the mold breaks down the sugar into alcohol & CO2. See my pictures (94 slides) of those molds & mother of vinegar, when I started my trials back in 2006. https://www.flickr.com/photos/115770886@N06/albums/72157672290471054/