Overview: Test cook Dan Souza shows host Julia Collin Davison how to make the perfect Grilled Pizza at home. Then, tasting expert Jack Bishop challenges Julia to a tasting of supermarket olive oil. Next, gadget expert Lisa McManus uncovers the best avocado gadgets. Finally, host Bridget Lancaster goes into the test kitchen with test cook Tim Chin to learn how to make the best Shredded Chicken Tacos.