It's an intersection of wine grapes produced in Germany in 1975 at the Research Institute of Freiburg. This variety is very interesting for the high quality of the wines produced and disease resistance. It has many similarities with Chardonnay.
Resistant grape varieties
Bronner (grape) - Wikipedia
Winery Archivi - Terre di Ger
The three disease resistant Bouquet varieties selected for grape juice
Artisans Vignerons d'Yvorne - Grape Varieties grown in the AVY Vineyards
Production - Vivai Viticoli Trentini
BRONNER, RESISTANT VARIETY, WINE GRAPE
Piwi grape varieties - the future of viticulture?
BRONNER, RESISTANT VARIETY, WINE GRAPE
Julian Bronner - Lieselehof Bio Winery
What is the leading grape variety of Austria?