MellowMe Cast On (MM Cast On) is my personal nickname for this crochet method of starting the foundation row in lieu of the standard chain cast on. The MM Cast On also makes a great crochet cord!
MellowMe CastOn - my favourite foundation row; how to
Double Chain Foundation (DCF) - what is it good for? It is especially good for when you have a foundation chain that has to be crocheted on both sides. A good example is when you are making booties. The DCF provides a stronger, less holey start to your work.
Double Chain Foundation (DCF) for starting crochet in the Round