Many cuts of beef now meet the USDA's regulations to qualify as lean or extra lean. 1  Of these, the following are considered extra lean: 2  Eye of round roast and steak. 3  Sirloin tip side steak. 4  Top round roast and steak. 5  Bottom round roast and steak. 6  Top sirloin steak.
Some varieties of Limestone are more porous than others. In general, limestone countertops are porous and vulnerable to stains. Water and soap spills need to be wiped right to prevent staining.Acid substances such as vinegar, lemon juice and ammonia will cause surface discoloration and etching.n general, limestone countertops are porous and vulnerable to stains. Water and soap spills need to be wiped right to prevent staining. Acid substances such as vinegar, lemon juice and ammonia will cause surface discoloration and etching.
Granite and marble are both porous stones with tiny capillary channels between the minerals. If you spill wine on unsealed granite or marble, the wine can sink into these channels and potentially permanently stain the stone. Quartz has no channels and it never requires sealing. Quartz is very stain resistant.