Overview

• Foundation of Sushi
• All future Sushi dApps will be built on top of it
• dApps built on top of BentoBox gain benefits e.g Gas cost reduction, extra yield on unused assets, simplified token approval and more

Table of contents

• What is BentoBox?
• What are the benefits of BentoBox?
• How to deposit and withdraw from BentoBox?

Bentobox (sometimes referred to as Bento) is a smart contract acting as the central vault for the entire Sushi ecosystem. Similar to how the banking system is the base-layer for financial operations in traditional finance, Bentobox is the base-layer for all future financial instruments Sushi intends to offer. In simple terms, Bentobox is like an Operating System powering your phone and Sushi’s products such as Trident, Limit Order, or Kashi are deemed as applications.

What are the benefits of Bentobox?

You may be wondering why we need Bentobox as the base layer for Sushi apps. Here is a list of the principal components and advantages that Bentobox offers when dApps are built on top of it:

For users

• Funds in Bentobox can be used for flash loans to generate a small fee, thus generating extra yield for idle assets (learn more about flash loans).
• Idle funds in Bentobox can be deployed by "Strategies" contracts. These contracts can help to generate extra yield by sending the idle assets to low risk protocols like Compound or the SushiBar.
• Reduced gas fees when moving funds between Sushi apps. e.g A user can swap on Trident or lend on Kashi at a cheaper gas fee than other concurrent protocols.

For developers

• Enable tracking of user’s deposits via artificial balance.
• Optimized deposit, withdrawal and skim functions that auto-convert ETH to wETH.
• Low gas (and fixed gas) transfers of tokens within Bentobox.
• Simplified approval of tokens (no need to re-approve for each protocol).
• Minimal proxy contract factory built in. No need to roll out your own.

More information

How to deposit and withdraw from Bentobox?

If you are using a protocol built on top of Bentobox like Kashi or Trident, then there is no need to deposit your assets in it. It is automatically done for you.

If you have some assets in your wallet and want to generate a small yield or use the Limit Order function, you have to deposit them in Bentobox.

However, do take into account that Bentobox's APR will always be lesser than that of a dedicated yield aggregator as it’s sole purpose is only to generate extra yield for dApps built on top of it**.**

Depositing into Bentobox

If you are new to Bentobox, it is highly recommended to try it out first on a cheap chain. In this article, we will be using Bentobox on Polygon.

Step 1: Navigate to the ‘Portfolio’ section on Sushi’s UI

Step 2: Locate the asset you want to deposit from your wallet, click on it and select ‘Deposit to BentoBox’.

In this example we will deposit some USDC.