25 Jul 2018 --- In an attempt to lower the use of single-use plastics in takeaway packaging, online delivery service Just Eat has announced a new UK six-week trial of seaweed-based sauce sachets for ketchup and garlic herb sauces. The Ooho! Seaweed Sauce sachets, created in partnership with sustainable packaging development company Skipping Rocks Lab, decompose in a matter of weeks.