There are just few steps for you to search my products in Merchant portal Web.
Login to your Yamimeal Merchant Portal via https://merchant.yamimeal.com/web/merch/#/login
Click on "Menu" -> "Item"
You can filter the search scope by Menu or Category, or search directly by product name.
If you need further assistance for this request, please send a ticket to Yamimeal customer care representatives via https://help.yamimeal.com/hc/en-us. We will try our best to help you as soon as possible.