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# Selling Liquid Products

If you are selling liquid products, you can display your products on the register in two ways.

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# Selling by Weight

${youtube}[Selling by Weight](V6b6Mk3xgvo)

You can choose to sell your liquid products per weight. Set your item to be **Sold by Weight** on the Add Item or Edit Item screen. Make sure to indicate the unit of measure of your item (ex. Oil 1L). Set your item's price.

![](https://storage.crisp.chat/users/helpdesk/website/fea84a7e8a4bd000/1_vbegst.png)

On the **Register** screen, select the item and a pop up will appear for you to input the desired quantity. If a customer comes to buy only 500mL of your item, input **"0.5"** on the field.

![](https://storage.crisp.chat/users/helpdesk/website/fea84a7e8a4bd000/2_tkkp1r.png)

On the ticket at the right side of the register, the price you have set for the item will be multiplied by the quantity you have input.

![](https://storage.crisp.chat/users/helpdesk/website/fea84a7e8a4bd000/3_9qgx5d.png)

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# Selling by Item Options

If you are selling products in specific volumes, you can use the **Item Options** when creating or editing an item.

${youtube}[Selling by Item Options](bC3XgP2zcL8)

Once you have created the main item and saved it, click on the **pen icon** to edit the item and add the item options.

![](https://storage.crisp.chat/users/helpdesk/website/fea84a7e8a4bd000/4_1lvuhbw.png)

On the bottom part of the **"Edit Item"** screen, you can find the **"Add Options"** section. 

A. Label your item option. (Ex. Oil 500mL)  
B. Set the price for that specific item option.  
C. (Optional) Set the cost of the item option.

![](https://storage.crisp.chat/users/helpdesk/website/fea84a7e8a4bd000/5_9br1bj.png)

You can find your item's options on the bottom most part of the screen.

![](https://storage.crisp.chat/users/helpdesk/website/fea84a7e8a4bd000/6_10acm68.png)