Place yeast and 2 tbsp in a small bowl. Stir to combine. Set aside.
Place flour, kefir and salt into Thermomix bowl and insert Butterfly. Whisk 1 min/Butterfly/speed 3.
Add the hydrated yeast, sugar and baking powder. Whisk 1 min/Butterfly/speed 3.
Pour batter into a large bowl. Cover and rest in a warm spot for 1 hour or until mixture is nice and bubbly.
Heat pan over low-medium heat. Grease egg rings with butter very well (or any metal rings).
Grease the pan with butter. Place rings in the pan (as many as will fit).
Pour 1/4 cup of batter into the rings. They will take at least 5 minutes. Once bubbles have formed and popped and the crumpet is starting to come away from the ring, pull the ring off.
Turn crumpet over to lightly brown the other side.
Repeat until all batter is used.
Toast and eat with toppings of choice as you would any other crumpet, except these are way better!