3.

Transfer sauce to the jar of a blender and puree until smooth. Pour sauce back into pan, stir in chicken stock and bay leaf, and bring to a boil over medium heat. Nestle chicken thighs in sauce, reduce to a simmer, and cook until meat registers 165°F in thickest part of thigh on an instant-read thermometer. Transfer chicken to a plate and let sit until cool enough to handle. Remove sauce from heat and discard bay leaf.