Yeah... R-HST & W15 it is..
From
Lallemand:
Lalvin R-HST®: For Riesling and other aromatic whites
R-HST was selected for its exceptional oenological properties in Riesling from trials conducted from 1991 to 1996 in the Heiligenstein region of Austria. R-HST has a short lag phase and generation time, even at cold temperatures. These features allow it to dominate and persist over spoilage yeast such as
Kloeckera apiculata. R-HST retains fresh varietal character and emphasizes floral (rose) and mineral characteristics while contributing body and mouthfeel for an overall complexity and elegance. R-HST also produces crisp, premium white and Pinot noir wines which develop well over time.
Lalvin W15™: For clean, low-temperature ferments
W15 was isolated in 1991 from a high-quality Müller Thurgau must at the Viticulture Research Station in Wädenswil, Switzerland. W15 was developed to ferment dry white and red wines at moderate speeds, where bright fruit and good structure are desired due to the production of higher levels of glycerol and succinic acid. Very little heat is generated by W15 during fermentation, reducing the potential for formation of sulfide aromas and good osmotic tolerance has been noted for late harvest fermentations and icewine.