Hey I think Fried chicken already has milk in it's ingredient list.
If it's not in there for you, you can update it in the config to look like the default:
"fried chicken": {
"enabled": true,
"shortname": "fish.cooked",
"skin": 2783384817,
"description": "Crispy, delicious, tasty goodness.",
"Spoil time [hours - if applicable]": 168.0,
"duration": 600,
"buffs": {
"Ingredient_Chance": 1.0
},
"Commands to run when the player consumes the food [key = command, value = description]": null,
"Commands to run when the food buff expires": null,
"persistThroughDeath": false,
"cookTime": 15.0,
"useCooldown": 0.0,
"permissionToCook": null,
"Permission that will preventing eating of this meal if present": null,
"dropWeight": 100,
"recipeDropWeight": 100,
"allowDefaultEffects": false,
"Effect settings": {
"Effect to run when the player consumes the meal": null,
"Should the effect run server side?": true,
"Max distance heard [0 = no limit]": 0.0
},
"Ingredients for meal": {
"wheat": 1,
"raw chicken breast": 6,
"spices": 1,
"milk": 1
}
},
If you wanted to add skim milk, you could. You would need to create a custom ingredient in the ingredients section of the plugin.