Cook chicken in broth (note #1): Place the chicken, aromatics and water in a large pot. Let it reach a boil over medium high heat. Then, lower to medium low heat, remove any impurities that rose to the top, and allow the chicken to fully cook on a gentle simmer, about 25-30 minutes. Turn off the heat, and leave the chicken in the broth for an additional 10-15 minutes.
Remove the thighs from the broth and let them cool down.
Strain the broth and reserve until needed.