Saute the tasso, celery, onions, carrot, fennel, garlic, thyme. salt, and black pepper in the olive oil until tasso browns and vegetables soften.
Deglaze pan with wine and Pernod, adding to pan off the heat and then returning to the stove.
Cook several minutes then add the stock, saffron tea, tomato paste, and Worcestershire, stirring to incorporate tomato paste.
Add shrimp, diced tomato and scallions, continuing to cook for several minutes until shrimp turn opaque and curl lightly.
Serve garnished with fennel fronds if desired.
