How do I delete nested attributes on arrays within mongodb documents? [duplicate]

Question

I migrated a SQLite db to MongoDB and now I have following documents within my collection:

{
   "_id": {
      "$oid": "622b4b415659480410d9a930"
   },
   "id": 1,
   "dish": "pizza",
   "country": "IT",
   "ingredients":[
      {"id": 1, "amount": "2", "ing": "morzarella", "foreign_key": 1},
      {"id": 2, "amount": "5", "ing": "tomatos", "foreign_key": 1}
   ]
   "preparation": "bake it"
}

Obviously I'd like to remove the "id" and "foreign_key" attributes and I had some success with it:

db.recipes.updateMany({}, {$unset: {"id":1}}) removes the "top level" "id" attributes.

db.recipes.find({"ingredients.id": {$exists: true}}, {"ingredients.id": 1}) finds the nested attributes in the "ingredients" array.

But how do I delete these nested attributes?

db.recipes.deleteMany({"ingredients.id": {$exists: true}}, {"ingredients.id": 1}) removes the whole document in which these attributes exists.