Kefir grains, a symbiotic culture of bacteria and yeasts. Traditional kefir is fermented at ambient temperatures, generally overnight. Fermentation of the lactose yields a sour, carbonated, slightly alcoholic beverage, with a consistency and taste similar to thin yogurt.
Aim: glans expansion. technique: urethral dilatation. I purchased a set of urethral sounds made from surgical quality stainless steel, with the following dimensions: 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38 F (1 F = 3 mm). I have been training for months approximately 1 hour once a week with sounds of successive dimensions and am now able to insert the biggest sound.
There are 8 sounds in the set, but since each of sound a different size on each end, it actually means you are getting 16 different sized sounds for the price of 8. The smallest one is 3 mm and the largest on is 18 mm, so there is something for everyone. This kit is also great for training your urethra.