Changing weather and increasing demand have led to shortages of maple syrup. Canada put half of its emergency supply into the market. Canada is the world's largest maple syrup producer. It produces around three-quarters of the global supply. A spokeswoman said there would be no shortages.

A warmer and shorter spring reduced supply. Maple trees need warm daytime and freezing nighttime temperatures. Also, global demand increased by 20 per cent, largely because of the pandemic. This means more people are cooking at home. The spokeswoman said: "We're seeing people cook more at home."