Put the lid on the food processor, turn it on, and drop the garlic clove in through the feed chute to blend. Turn the machine off, take off the lid, and scrape the garlic down. Add the edamame and avocado flesh. Process until very smooth. Add the lemon, tahini, 2 tablespoons olive oil and 1 teaspoon salt and process, pausing the food processer to scrape the mixture up from the bottom to make sure it’s well combined. Drizzle in the water with the machine running.