Put a table into another table with repeated primary keys - database

Question

Turns out I have these three tables:
Recipes: id(primary key), name, time, difficulty, description, photo_url, amount_pax
Recipe_type: id(primary key), name
Ingredients: id(primary key), name
In my exercise the three tables have to be yes or yes.
I need to put the type of recipe and the ingredients in the recipe table but I don't know how to do it because I could put the id_type_recipe and the id_ingredients as a foreign key but the problem is that in several recipes said id can be repeated because if tomato has the id 1 in another recipe there may be tomato and this is not feasible because they are primary keys in another table that cannot be repeated... how could I put the type of recipe and ingredients in the recipe table?
I attach my E-R diagram.
I started by entering the ingredient id and the recipe type id but I realized that they were going to be repeated and this is not possible as they are primary keys in other tables.

Answer 1

To handle Recipe_Type you can add Recipe_TypeId as an additional column to the Recipes table.
But for Ingredients, expecting each Recipe may need several Ingredients (of different quantities) you will need an additional table.
Let's say you have a Recipes for Tomato Soup and Chicken Noodle Soup with Recipes records like this:
ID
Name
Time
Difficulty
Description
Photo_url
amount_pax
Recipe_Type_ID
1
Tomato Soup
3:00
1
Take tomatos...
http://...
2
1
2
Chicken Noodle Soup
20:00
2
Cook Chic...
http://...
4
1
and a Recipe_type like this:
ID
Name
1
Soup
And Ingredients like this:
ID
Name
1
Tomatoes
2
Milk
3
Salt
4
Chicken
5
Water
6
Noodles
Now you also need an intersection table (named, say RecipeIngredient) that would look something like this:
RecipeID
IngredientID
Qty
Measure
1
1
8
Each
1
2
1.5
Cups
1
3
1
Tsp
1
5
1.5
Cups
2
3
1
Tsp
2
4
2
Lbs
2
5
4
Cups
2
6
1
Lbs
This new table will have a compound key like this: (RecipeID, IngredientID)