Air bubbles - Glazing
Always avoid mixing air bubbles into the glaze mixture
Air bubbles ruin the irresistible appeal of a perfectly smooth chocolate glaze. Luckily, creating air bubbles is easily avoided by mixing together your ingredients with a stick blender at low speed in a high, narrow recipient. Do remember to move your stick blender up and down gently while mixing, and to keep its blade under the surface of the liquid at all times.