In a bowl, combine soy sauce, ginger, garlic, Harissa chili paste, honey, and sesame oil, use a whisk or a fork, stir to mix well. In another bowl, dissolve tapioca flour in water, stir until completely dissolved. Pour the tapioca into the sauce mixture, mix until well combined. Heat a pan, add the sauce, frequently stirring until the sauce thickens. Remove from the heat.