There is a product called Seta Water Lentil. It is a duckweed that grows in a pond. It’s made in Canada by Seta Organic Inc. The only ingredient is ‘water lentil’ – which is another name for duckweed. It’s a plant. There are NO other ingredients. Is it Kosher for pesah for sefaradim?
Aaron Abadi 
michael aryeh 
Josh Wachtel