Price per root – the size of root supplied relates to the market price for cassava at that time. The cassava is a woody shrub of the Euphorbiaceae family that is extensively cultivated as an annual crop in tropical and subtropical regions for its edible starchy tuberous root, a major source of carbohydrate. The root cannot be consumed raw, since it contains free and bound cyanogenic glucosides which are converted to cyanide in the presence of linamarase, a naturally occurring enzyme in cassava. Cassava varieties are often categorised as either “sweet” or “bitter”, signifying the absence or presence of toxic levels. For some smaller-rooted “sweet” varieties, cooking is sufficient to eliminate all toxicity. The larger-rooted “bitter” varieties used for production of flour or starch must be processed to remove the cyanogenic glucosides. The large roots are peeled and then ground into flour, which is then soaked in water, squeezed dry several times, and toasted. The starch grains that float to the surface during the soaking process are also used in cooking. Cooked in various ways, cassava is used in a great variety of dishes. The soft-boiled root has a delicate flavor and can replace boiled potatoes in many uses: as an accompaniment for meat dishes made into purées, dumplings and gnocchi, soups, stews, gravies, etc. Deep fried (after boiling or steaming), it can replace fried potatoes, with a distinctive flavor. Cassava flour can also replace wheat flour, and is so-used by some people with allergies to other grain crops. Tapioca and foufou are made from the starchy cassava root flour. Boba tapioca pearls are made from this root.