The perfect spread for when friends and family come to party.
In a large saucepan over medium heat, warm the olive oil. Add the onions and sauté for 20 to 25 minutes, stirring often, until golden brown. Add the red wine and sauté until the wine is cooked off, about 10 minutes more. Remove from the heat, add the salt, and let cool.
Once cooled, transfer to a medium mixing bowl and fold in the sour cream, yogurt, and soy sauce. Season with pepper and more salt, if needed. Transfer to the fridge and refrigerate for at least 30 minutes before serving.