thanks for the link ..... im very comfortable with sourdough already, as with techniques in grain types, temps and moisture levels to control flavor.... was more looking for a yeast someone as worked with that they like for a strong sour. my current starter was my grandmothers when she was my age. I wasnt very pleased with a starters flavor using native spring time napa yeast after tweaking it for near 2 years. looking to make something new with others input ;-)