# What is BentoBox BentoBox (sometimes referred to as Bento) is a smart contract acting as the central vault of the whole sushi ecosystem. Much like the banking system is the base-layer for financial operations in traditional finance, the BentoBox is the base-layer for all the future financial instruments Sushi intends to offer. To make it more visual, You can see the BentoBox like an OS powering your phone and sushi products like trident, Limit Order or kashi as applications. ![](https://i.imgur.com/PEsx6oZ.png) BentoBox brings advantages to apps built on top : - Funds in the BentoBox can be flash loaned against a small fee, generating extra yield for assets sitting inside. ([learn more about flash loans](https://hackmd.io/@HHK-ETH/what-is-a-flashloan)) - A part of the funds in the BentoBox are used by contracts called "strategies", this contracts generate extra yield by sending assets to low risk protocol like [Compound](https://compound.finance) or the [Sushibar](https://hackmd.io/@HHK-ETH/SyTDuTH7F). - Reduces the gas fees when moving funds between sushi apps: You can swap on trident or lend on Kashi at a much cheaper gas cost than concurrent protocols. You can find more infos in this article : [getting started with bentoBox](https://hackmd.io/@HHK-ETH/ry1Hi8I-Y).