I bought the Blue Ribbon Round Ripple dishcloth pattern many years ago. It is a great crochet pattern and makes a beautiful dishcloth. Here is the link to the crochet pattern.
I crocheted two of these round ripple dishcloths. This one is crocheted using the original pattern as written with the popcorn stitch center.
I also have crocheted the pattern using a flat center. The flat center is nice to crochet if you are using the pattern to make a decorative cloth so you can place a dish or other item on it. With the flat center, your item can sit flat and not be tipsy.
Here is a cloth with the flat center.
I crochet the flat center using the following modifications for round 2.
Ch 2, then DC in same st. Ch 2, 2 DC in next st. Repeat Ch 2, 2 DC in next st around and join with Sl ST to top of beg chain. (8 clusters and 8 2ch spaces.)
This round ripple dishcloth pattern is a wonderful project to use up bits of scrap cotton as I have done with these two cloths.
Enjoy and happy crocheting to all!