Melt butter in saucepan; add onion and bell pepper and cook for 10 minutes on medium low, stirring frequently. Stir in flour, then add
spices and cook for about 2 minutes, stirring constantly. Add broth and cook for a few minutes on medium. Add milk (or cream), Young Guns Medium Green Chile, mixing well. Cover and simmer on very low heat for about 15 minutes, stirring occasionally. Uncover pot and add yogurt (or sour cream). Stir to combine and add turkey to sauce. Preheat oven to 350 degrees.