Dont know how to add a recipe code-wise

[QuintupleDude]

I want to add a recipe that does a type of ore refining that does this (this recipe comes with oil processing), in a chemical plant , put 5 ore and 10 light oil , get 6 ore , put 6 ore and 10 heavy oil , get 7 ore , put 7 ore and 10 petrolum gas get 8 ore , i want a example mod that i could work with if anyone could help , thanks!!!!!!

[darkfrei]

As example:
Factorio\data\base\prototypes\recipe\fluid-recipe.lua

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  {
    type = "recipe",
    name = "sulfuric-acid",
    category = "chemistry",
    energy_required = 1,
    enabled = false,
    ingredients =
    {
      {type="item", name="sulfur", amount=5},
      {type="item", name="iron-plate", amount=1},
      {type="fluid", name="water", amount=100}
    },
    results=
    {
      {type="fluid", name="sulfuric-acid", amount=50}
    },
    subgroup = "fluid-recipes",
    crafting_machine_tint =
    {
      primary = {r = 0.875, g = 0.735, b = 0.000, a = 0.000}, -- #dfbb0000
      secondary = {r = 0.103, g = 0.940, b = 0.000, a = 0.000}, -- #1aef0000
      tertiary = {r = 0.564, g = 0.795, b = 0.000, a = 0.000}, -- #8fca0000
    }
  }

or

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  {
    type = "recipe",
    name = "plastic-bar",
    category = "chemistry",
    energy_required = 1,
    enabled = false,
    ingredients =
    {
      {type="fluid", name="petroleum-gas", amount=20},
      {type="item", name="coal", amount=1}
    },
    results=
    {
      {type="item", name="plastic-bar", amount=2}
    },
    crafting_machine_tint =
    {
      primary = {r = 0.498, g = 0.498, b = 0.498, a = 0.000}, -- #7f7f7f00
      secondary = {r = 0.400, g = 0.400, b = 0.400, a = 0.000}, -- #66666600
      tertiary = {r = 0.305, g = 0.305, b = 0.305, a = 0.000}, -- #4d4d4d00
    }
  }

Just make new mod, info.json, then in data.lua add new code

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data:extend({
 -- here
})

For better modding you are need https://notepad-plus-plus.org/

[bobingabout]

if you do simply want to add recipes from existing items, follow the steps above (they're all quotes from the base game).

if you want new intermediate items (the ore in each step is actually a new one, not the original), you'll need to add those items too.

[Shenpen]

Klonans old modding introduction is still worth paying attention to:

https://www.youtube.com/watch?v=8lPNOOVYeMU&t=932s