Sawdust is used to adulterate:

The correct answer is coriander powder.

Key Points

• Chemicals that become contaminants when mixed with other chemicals are known as adulterants. To increase the quantity while lowering the quality, adulterants are introduced to pure substances.
• This spice is contaminated with husk, ash, and dung powder. Consuming tainted coriander powder might result in gas, constipation, and cramping in the stomach.
• In general, food is considered adulterated if it contains a dangerous or harmful chemical that could endanger human health. Examples of tainted foods include Brie cheese contaminated with Listeria monocytogenes and apple cider contaminated with E. coli O157:H7. 
• Coriander powder is also adulterated with sawdust. The procedure used to check for adulterants in the case of the chilli powder can be utilised. Tea granules sawdust can be used to tamper with loose tea powder. Adulterators mix artificial colour along with some flavours.

Additional Information

• Acetic acid and water are combined to create vinegar through a two-step fermentation process. First, yeast consume any liquid derived from a plant source, such as fruits, whole grains, potatoes, or rice, and feed on the sugar or starch therein. It ferments into alcohol.
• Cheese is a dairy product made from the coagulation of milk protein casein. It comes in a broad variety of flavours, textures, and forms. It is made out of milk-derived proteins and fat, typically from the milk of cows, buffalo, goats, or sheep.
• In essence, milk is an emulsion of fat, protein, dissolved sugar (carbohydrate), minerals, and vitamins in water. All mammals' milk contains these ingredients, though the amounts vary between and within species and across species.