To clean the yellow curry stains on the rag, you need to prepare: white vinegar, water, salt, and a basin.

1. First, pour an appropriate amount of water into the basin as shown in the picture.

2. Then add the appropriate amount of salt into the water basin as shown in the picture below.

3. Then take out the white vinegar and pour it into the basin as shown in the picture.

4. Soak the rag in the above-mentioned water basin as shown in the picture below.

5. Then just wash the rag in the basin. See the picture below for details.

6. Finally, as shown in the picture, you can clean off the yellow curry stains on the rag.