Burnt-on grease makes your stove top unattractive and less efficient, but typical cleaners don't usually work to remove grease that has been burnt onto the surface. The process outlined below starts with the easiest and least harsh method and works up to the most difficult in order to minimize damage to your stove top, but please be aware that as you progress through the steps you might find that the burnt-on grease is removed completely before you finish. This is normal, and you do not have to complete any steps you haven't yet gotten to once your stove top is clean.
Remove heating coils and grease catchers from electric stoves. For gas stoves, remove metal grills and cover gas heating elements well with newspaper and masking tape to avoid getting anything in them.
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Mix 1 part lemon juice and 1 part white vinegar in a spray bottle. Spray this over the grease and allow to sit for about 10 minutes. Scrub with a damp rag to remove burnt-on grease. If this does not remove all grease, proceed to the next step.
Run a damp rag over the greasy area, then sprinkle a layer of baking soda over the area. Allow this to sit for about 5 minutes. Scrub with a damp rag or scrubber sponge to remove burnt-on grease. If this does not remove all grease, proceed to the next step.
Pour Coca-Cola over the burnt-on grease. Allow this to fizz for about 5 minutes, then scrub the area with a damp rag or scrubber sponge to remove burnt-on grease. If this does not remove all grease, proceed to the next step.
Wet a soap-filled steel wool pad with water. Scrub the areas covered with burnt-on grease with the pad until all the grease is removed — you might have to rinse the pad periodically.