In a small bowl, combine all the seasoning ingredients and brown sugar.
Also peel and mince the garlic cloves. Chop the onions into small pieces and set all of them aside.
Heat a pan at medium-low heat and melt 4 sticks of unsalted butter.
Add chopped onion and minced garlic to the melted butter in the pan. Saute for 30 seconds to a minute, stirring constantly.
Next, add chicken broth, Worcestershire sauce, lemon juice, lemon zest, as well as the other optional ingredients.
Cook everything for about 30 more seconds while stirring constantly until well combined.
Now, add the seasoning mix + brown sugar to the base. Bring it to a slow boil while stirring occasionally.
Take it off the stove once it boils and the ingredients are well combined.
Let the sauce cool down. Serve and enjoy!