Rinse off the wet grout from the silverware's surface outdoors with a garden hose.
Pick out the wet grout from designs, recesses and depressions or between tines with a toothpick. Gently scrub the silverware with a rag or nylon scrubbing pad under running water. Move the pad or rag in small circles to avoid spreading grout over other parts of the silverware.
Add 1 gallon of hot water to a bucket and pour in 2 cups of sugar. Stir the water while the sugar dissolves to blend it into the water.
Place the grout-stained silverware in the bucket and allow it to soak overnight.
Remove the silverware from the bucket and rinse under running water while scrubbing it with a rag or nylon scrubbing pad. Continue to keep the grout wet while scrubbing until no grout remains on the silverware's surface. Soak the silverware in sugar water overnight as many times as necessary to remove all particles of grout.
Wash the silverware with dish soap, rinse and dry with a dishcloth.