<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
What can I put in ceramic cups to stain them?
<|assistant|>
You can put coffee, tea, red wine, and certain acidic foods like citrus fruits or vinegar into ceramic cups to stain them. These natural substances will cause the ceramic to darken over time as the materials react with the clay. Some chemical stainers may also be used to quickly colour the ceramic; however, it is important to research the safest and most effective stainers before using any products.