Nielsen heat logs produce a very attractive flame and generate great heat. Nestro Nielsen is a highly compressed, dense briquette which means it doesn’t crumble. They are a lovely rich golden color with a hole through the Center. Nestro Nielsen heat logs are easy to light and long-lasting making them perfect to replace traditional firewood. Nielsen heat logs slightly expand lengthways as they burn so we recommend breaking them into smaller pieces and not overloading your firebox. Break them up into 3 or 4 pieces, place any kind of kindling beneath them, and you are set, then gradually introduce whole logs once you learn what is best for your stove. All our briquettes and heat logs are made from pure, sawdust and are held together by compression alone.