Jeroboams are large bottles used to store or serve wine. These bottles are typically equivalent to four regular sized wine bottles, giving them a capacity of three litres. There are many synonyms for Jeroboams. Some common ones include double magnums, which are bottles that hold three litres, as well as rehoboams, which are slightly larger bottles that hold up to four and a half litres. Other synonyms for Jeroboams include imperial bottles, methuselahs and Salmanazars, which have a capacity of six and nine litres respectively. Whatever the name, these bottles are ideal for special occasions and gatherings where a lot of wine is needed.