FSC 10kg Restaurant Grade Compressed Charcoal Briquette. Material: Compressed Charcoal. Preparation and Usage: To light, light some standard restaurant grade charcoal in the normal way. Once lit, add the briquettes on top of the hot charcoal. The heat will spread through the briquettes and is ready to cook on in approximately 30 minutes. Sold in a 44cm x 22cm x 22cm box. Warning: This product is age restricted to 18 or over. You'll be asked to confirm your age upon delivery. Top Tip: Mixing Restaurant-Grade Charcoal with compressed charcoal briquettes gives a great combination of flavour and long-lasting burn time.