Candle

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A candle is a light source, which exists in an uncolored variant and 16 dyed ones. Candles can be lit with flint and steel and extinguished by water or by right clicking. They can also be waterlogged, but cannot be lit while waterlogged.

Obtaining
Candles can be mined using any tool, or without a tool.

Light
Candles can be used as a light source, emitting light like a sea pickle. A single candle emits a light level of 3. Up to four similarly-colored candles may be placed in one block, with each candle increasing the emitted light level by 3, for a maximum light level of 12. They also emit fire particles.

Candles are not lit when they are placed, and must be lit using flint and steel, fire charge, or any flaming projectile. Candles may be waterlogged, but waterlogged candles cannot be lit. Lit candles can be extinguished using water or by the player with the candle.

Cakes
A single candle of any color may be onto an uneaten cake, turning it into a candle cake, which acts as a normal single candle. Only one candle can be placed on a cake. If the candle cake is eaten or destroyed, the candle is dropped. This may be used as a birthday cake.

Trivia

 * Candles are similar to the concept of burnt-out torches from the Halloween Update.
 * Using the command  allows for a both lit and waterlogged candle.
 * The same thing can be done using the debug stick.

Kerze Bougie Candela Candle Świeczka Vela Свеча เทียน 蜡烛