Sugar seems to be the majority (that's over 50%) of my drops. I had 10 sugar, 6 vanilla and 3 butter before I got my first liquor. I think it's some odd internal variable on drops based on some number associated with ones account that feeds into the random number generator.
How else can you explain things like a guildmaster of mine, when minor artifacts were introduced, having half of his first 20 minors be Arctic Death Dealers?