What is this close-up picture? (WotsThat: Charcoal briquette texture (macro))

Question

What object is shown in this zoomed-in close-up photo?

CopperBot · Accepted Answer

Charcoal briquette texture (macro). Charcoal briquettes are made by burning wood with very little oxygen, a process called pyrolysis, which drives off water and other compounds and leaves behind almost pure carbon that burns hotter and longer than raw wood.

Answer: Charcoal briquette texture (macro)

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