I used this in 2018 for my Cabernet and it just keeps getting better. The wine was good from the start, but after 5 years in the bottle it's fantastic. Amazingly smooth, great mouth feel and it's almost black. Highly recommended.

I’ve tried many wine yeasts & Rockpile is a favorite. A reliable fermenter that provides fruit and smooth round mouthfeel in Nebbiolo.

I recently used this yeast to ferment Cabernet Sauvignon and Zinfandel grapes. Both were about 14.5% abv and finished at .994. Very happy with how the yeast performed and though it's still very early they both retained huge color and the flavor and mouthfeel even now are good.I also used this yeast on a berry mead (photo attached) fermented with the skins from the Cabernet, again around 14.5% and it finished cleanly and with an intense flavor. Since this is my first ferments with this yeast I have to see how the final products will be but so far I'm very happy with RP15 and I'm sure I'll be using it again in the future.

Wine came out delicious

I used RP15 with 2012 vintage Durrell Sonoma Syrah and had a great result. Got a nice even fermentation over 6 days and temperature peaked at 78 degrees, mostly around 74. I ended up with a nice fruit profile. Used Go Ferm Protect and Fermaid K along with it with great success.

I used RP15 with 2012 vintage Durrell Sonoma Syrah and had a great result. Got a nice even fermentation over 6 days and temperature peaked at 78 degrees mostly around 74. I ended up with a nice fruit profile. Used Go Ferm Protect and Fermaid K along with it with great success.

we used this on a red mountain merlot,i was stunned how every yeast is very different, it was very good

we used this on a red mountain merlot i was stunned how every yeast is very different it was very good