Materials Mgmt
Keep a catalog of the ingredients and supplies you buy often (scallion, flour, etc.), tracking each one's unit, supplier, and price history. When an ingredient-purchase expense in your books is tagged to a material, this page automatically builds its price trend and purchase history.

Add a material
- Click Add Material (top right) to open the dialog.
- Enter a Name (required) and Unit (e.g. kg, bottle, piece).
- Choose a Material Category, and optionally pick a supplier under Select supplier (optional).
- Click Create.
View and edit a material
- Click any row to open its detail page, showing Usual Unit Price, Latest Unit Price, Average Unit Price, Lowest / Highest, the Price Trend, and Purchase History.
- Click Edit (top right) to change the name, unit, category, supplier, and note; for a material you no longer use, tick Archive this material and click Save.
- The list hides archived materials by default — tick Include archived at the top to see them.
Purchase History is built from ingredient-purchase expenses tagged to this material in the daily books; it isn't added on this page. Click a date to jump to that day's records.
Manager permission required to delete a material, and deletion is only possible while it has no purchase records — for a material that already has purchases, use Archive this material instead.