Metric teaspoons
Metric teaspoons are units used for measuring small quantities of liquid or dry ingredients. One metric teaspoon is 5 milliliters.
UK gallons
A UK gallon is a unit of volume used in the United Kingdom for measuring liquids such as fuel and water. One UK gallon is about to 4.54609 liters or 0.16054 cubic feet making it substantially larger than the US gallon.