2x Mangrove Jack&rsquo;s Yeast M20 Bavarian Wheat Craft Series Yeast 10g treats 23L 2x 10g treats 23L / 5 Gallons Best for brewing Hefeweizen, Kristal Weizen, Dunkel Weizen etc Consistent, top quality results with each brew. Temperature Range: 59-86F (18-30C) Superior shelf stability and ease of use.