May 6, 2011 food microscopists Milk chocolate Dual-stained image showing protein (green), fat (blue), cocoa solids (red). and sugar crystals (dark green/black). Sugar crystal sizes range from 5 to 25 µm. Guest food microscopists. share the love: Email a link to a friend (Opens in new window) Email Share on Facebook (Opens in new window) Facebook Share on Tumblr (Opens in new window) Tumblr Share on X (Opens in new window) X Share on Pinterest (Opens in new window) Pinterest Like Loading... Related