A tea caddy is a box, jar, canister, or other receptacle used to store tea. The word is believed to be derived from catty, the Chinese pound, equal to about a pound and a third avoirdupois. The earliest examples that came to Europe were of Chinese porcelain, and approximated in shape to the ginger-jar. They had lids or stoppers likewise of china, and were most frequently blue and white. Until about 1800 they were called tea canisters rather than caddies.