Custom Liquids and Fruitpress-ing

[rushsteve1]

Hello! I'm working on a content mod that adds liquid Vegetable Oil, and I've run into a few issues I'm confused by if anyone can help me out

I'm trying to create a new recipe for Oil Lamps that requires both a bowl and an amount of liquid vegetable oil, consuming the bowl in the process.
Currently I have this, but this requires that both the bucket and bowl have 0.2 litres, and doesn't consume the bowl

{
	"ingredientPattern": "B",
	"ingredients": {
		"B": {
			"type": "block",
			"code": "game:bowl-fired",
			"returnedStack": { "code": "game:air" }
		}
	},
	"attributes": {
		"liquidContainerProps": {
			"requiresContent": {
				"type": "item",
				"code": "steve:vegetableoilportion"
			},
			"requiresLitres": 1
		}
	},
	"width": 1,
	"height": 1,
	"shapeless": true,
	"output": { "type": "block", "code": "game:oillamp-up" }
}

Updated with some suggestions from the Discord, though still does not consume the bowl

In order to make Vegetable Oil I wanted to add a custom Fruitpress recipe by patching the games one. I have this with just carrots for testing
but when I right-click on the Fruitpress with a carrot the game immediately crashes (log attached)

Here's my patch file

[
	{
		"file": "game:itemtypes/food/vegetable",
		"op": "addmerge",
		"path": "/attributes",
		"value": {
			"juiceablePropertiesByType": {
				"*-carrot": {
					"litresPerItem": 0.1,
					"liquidStack": {
						"type": "item",
						"code": "steve:vegetableoilportion",
						"stacksize": 1
					},
					"pressedStack": {
						"type": "item",
						"code": "steve:pressedmash-vegetable",
						"stacksize": 1
					}
				}
			}
		}
	}
]

 

client-crash.txt

Edited January 10 by rushsteve1
update example for first question