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What are 2X reward farms ?

2* reward farms are farms where you can stake your SLP tokens to earn Sushi + another token as rewards on top of trading fees.

These farms use a new contract called MasterchefV2 (minichefV2 on sidechains).

This allows other projects to incentive liquidity by adding their tokens as rewards on top of existing Sushi rewards.

You can learn more about masterchef here.