In a small sauté pan, whisk together vegan butter and flour over medium heat until melted and beginning to turn light brown. 

Slowly add stock while whisking constantly. Increase heat to medium-high and simmer, stirring constantly, until thickened. 

Add wine and continue to cook until desired thickness is reached. If too thick, thin with a little more stock. Season with salt and pepper and serve immediately. Garnish with additional fresh pepper.