まっくろけ
pitch black; completely black
Also written 真っ黒気
Na-adjective
「何なに、この真まっ黒くろけのパン」「それ、竹炭たけすみが入はいってるんだって。珍めずらしいから買かってみたんだ」
"Why on earth is this bread pitch black?" "Because it has bamboo charcoal in it. I bought it because I thought it was unusual."