Doreen has had a long career in wine working as a sommelier. In the last ten years, she became obsessed with orange wine. In the fall of 2019, Doreen started a little side hustle Orange Glou orange wine club. Her club has taken off very fast and was mentioned in over 300 magazines including the NYT, Food and Wine, Saveur, Punch and many more.
In 2021 Doreen opened the doors to Orange Glou wine store, a shop exclusively featuring natural orange wines from all over the world.
Winkler constantly educates herself on the growing world of natural wine by working harvest every year, including at Domaine Regis Bard, Lucy Margaux, Adelaide Hills, Australia, Domaine du Comte Liger Belair, Burgundy, France, Yetti and the Kokonut, Barossa Valley, Australia, Folias de Baco, Douro, Portugal, Partida Creus, Catalonia, Spain and more.
In addition, she travels to wine regions all over the world and
 to natural wine fairs such as La Dive Bouteille, Les Pénitentes, La Salon des Vins de Loire in Loire Valley, France, Brunmaire in San Francisco, RAW wine in New York.
She is on top of all trends, new wine making techniques and new producers arriving in the US.