The Folia potholders are leaf-shaped, double layered and seamless. What not to like!
The double layer and the post dc fabric gives a thick potholder that is safe to use.
They are made in the round from tip to tip in front/back post double crochet.
The pattern has written instructions and a chart as well.
I have made a video on my youtube channel that gives help with the increases and decreases: https://www.youtube.com/watch?v=LuKzXOVIA1I (danish version also available)

Yarn:
Krea deluxe organic cotton (165 m/50 g)
4 skeins for a set of large potholders (18x28 cm)
3 skeins for a set og small potholders (15x23 cm)

Recommended hook: 3 mm

The pattern is available in english (US terms), german and danish