# Serve the BAR

[Embedded Liquidity Pools (ELPs)](https://docs.vyfi.io/vy-finance-products/bar/serve-the-bar/embedded-liquidity-pools-elps)

[Liquidity pools Principal Token](https://docs.vyfi.io/vy-finance-products/bar/serve-the-bar/liquidity-pools-principal-token)

[The Serve Operation](https://docs.vyfi.io/vy-finance-products/bar/serve-the-bar/the-serve-operation)

[An example of ELP’s in Action](https://docs.vyfi.io/vy-finance-products/bar/serve-the-bar/an-example-of-elps-in-action)