Remove excess caramel off the couch by scraping it gently with the blunt side of the butter knife.
Add several drops of dry-cleaning solvent to a cloth. Blot the caramel stain for several seconds. Continue if the caramel discoloration remains.
Sponge the caramel with a cloth dampened in water until you have saturated the sticky substance.
Mix 1 tablespoon of clear, nonsudsy ammonia with 2 cups of cold water. Moisten a clean, white cloth in the diluted ammonia mixture.
Blot the caramel stain with the damp cloth until the discoloration is no longer visible.
Sponge the couch with a clean cloth moistened in cold water to remove the ammonia mixture from the fabric. Pat the couch dry with a clean towel.