After some minutes, use a certified cooktop cleaner to rub down the surface. Then wet a soft cloth with water and wipe down the stove gently. Finally, dry the surface with a clean rag or paper towel. Your surface should now be shiny and new looking. By using ELAG’s “How to clean a glass cooktop”-instructions home cooks can retain the beauty and functionality of their cooktops for decades. One true advantage of glass-ceramic cooking appliances is the non-porous surface, which locks out food particles while the flat high-tech glass makes cleaning a walk-over.