Once you have your grocery list ready to go, click on the White Box at the bottom of your list (to the left of the Continue button). When this box appears, enter your Zip Code and click the Refresh button (the button with the two arrows making a circle). Select your preferred retailer, these will vary depending on your location. You will likely be rerouted after selecting your retailer, if you are not, click on the Continue button. From here, your cart will be filled based on your shopping list. You will be shown substitutes when available. Note: some retailers may not carry / have stock of every ingredient on your shopping list.