Insure bet in blackjack is a side bet that allows players to insure their hand against the dealer’s blackjack. This bet is available only when the dealer’s upcard is an Ace, and it pays 2 to 1 if the dealer has blackjack.
The insure bet is optional, and it is not offered at all casinos. .
The insure bet can be a good idea if the player has a strong hand, such as a 20 or 21. If the player has a weak hand, such as a 16, it is not a good idea to make this bet.
Some players believe that the insure bet is always a bad idea, because the house edge is higher than the regular blackjack game. However, this bet can be profitable if used correctly.