A dark brown crust up the side of a capacitor is invariably glue, not electrolyte.
So, it may not have a dark crust on its surface.
Although only a few days old, the lava had a dark black crust and was deceptively similar to other, much colder flows.
The head of the tool bore a dark red crust.
The kuih is yellow in colour but has a dark brown crust at the top caused by the baking process.
He stopped suddenly, staring at a dark wide crust of blood that spread out in a circle on the smooth marble floor.
It comes in a log weighing about a pound with a dark crust of crushed pepper and spices.
The ringing sound was almost gentle, but they could all see the charcoal sticking to the metal in dark crusts.
Cook undisturbed until a dark crust appears on bottom and they release fairly easily with a spatula, about 5 minutes.
The blood on him had dried long ago and dropped away in dark crusts as he moved.