In a medium saucepan over medium heat, heat 1 to 2 tablespoons of olive oil.
Sauté the onion and garlic until the onion is slightly translucent, about 5 minutes.
Add the mushrooms, stir well, and raise the heat to medium-high.
Cook for about 10 minutes.
Season with the oregano, sage, salt, and pepper.
Add the beef broth, and bring to a low boil.
Reduce the heat to low, and simmer for 15 minutes, or until some of the liquid has evaporated and reduced to a thicker consistency.
Stir in the coconut milk, remove from the heat, and serve.