How to Scale a Recipe to Adjust for Different Portions (2024)

If you have more or fewer people to feed than a recipe serves these tips will show you how to scale a recipe to the serving amounts you need.

You’ve got family coming over and your favorite beef stew recipe serves 4, but you’ve got 7 people coming. Or maybe it’s the opposite for you, you used to make recipes for 4 but now there is only two or one of you to feed.

What are you going to do?

How to Scale a Recipe to Adjust for Different Portions (1)

One solution is to scale the recipe.

So you can serve more people or less, but it’s not always as straightforward as it seems. Here are some tips to make your recipe scaling a success.

How to Scale a Recipe, Find You Recipe Conversion Factor

The easiest approach to scaling a recipe is to multiply or divide the ingredients to the portion size you need and to do that, you need to calculate your recipe conversion factor.

For example, if you are going to make a pasta sauce that served 6, but you need it for 12, you can multiply all the ingredients by 2 and 2 is your conversion factor. Or if your recipe is for 4 and you only want two serving, you’d divide by 2.

The precise formula is:

number of servings you want ÷ number of servings in recipe = your magic number

Use your magic number and multiply to increase a recipe or use your magic number and divide to make a smaller amount.

Of course, you can run into problems with this if you need 1 3/8 tsp of basil and you don’t have a 3/8 measure.

In this case, use your judgment and simply round off the number to 1 ¼ teaspoons. It’s not likely to make a crucial difference.

Still, there are more problematic ingredients. What if you end up needing 3 ½ eggs?

That gets a little trickier. I usually opt for the smaller amount of 3 eggs and add a little more liquid if needed. In most recipes, this works out well.

Also keep in mind that some recipes don’t scale well, including baked goods. If you decide scaling is not a good idea, we’ve got some tips for you at the end of this article.

How to Scale a Recipe to Adjust for Different Portions (2)

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Things to Consider When Scaling a Recipe

There are a couple of things to consider including cooking time and your cooking dishes.

Cooking Time: If you’re preparing larger or smaller portions, it may alter your cooking time. Allow for more time if making a larger portion.

For smaller portion check the dish at least 10 minutes early to see if it’s done. You don’t want to overcook the dish.

If you’re cooking meat; make sure to use a meat thermometer to ensure the appropriate internal temperature is reached.

Cooking Dishes: If you’re making baked macaroni and you halve the recipe, try to find a dish that will keep the macaroni at the same depth as the original recipe.

For example, if the recipe called for a 13 x 9-inch pan, find a rectangular or square pan about half the size. Like an 8-inch square pan.

That will help ensure your cooking time will be roughly the same.

What to Do if the Recipe Doesn’t Scale Well

If you discover your recipe won’t do well with scaling, and the recipe is too large, go ahead and make the full recipe. You can portion and freeze any unused amounts.

Allow the food to cool completely before freezing. Also, remove any air from freezer bags and make sure that your freezer-safe containers are nearly full, so there isn’t any extra air.

And finally, don’t forget to date and label what you’ve got, so you can come back to it later. I also like to add it to my freezer inventory sheet.

If the recipe is too small, but won’t scale well, cook it in batches. That way, you can ensure you’ve made the recipe according to the specifications, but still get the portion you need.

How to Scale a Recipe to Adjust for Different Portions (3)

Those are my tips for how to scale a recipe. Start with your conversion number then adjust for cooking time and the cooking dish. With those three things, you should be able to scale most recipes up or down successfully.

Do you have any extra tips to add to how to scale a recipe? I would love to have you share them in the comments below.

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How to Scale a Recipe to Adjust for Different Portions (2024)

FAQs

How to Scale a Recipe to Adjust for Different Portions? ›

Determine the required yield of the recipe by multiplying the new number of portions and the new size of each portion. Find the conversion factor by dividing the required yield (Step 2) by the recipe yield (Step 1). That is, conversion factor = (required yield)/(recipe yield).

What are the steps for scaling a recipe when the portion size is changed? ›

How To Scale Up A Recipe: 4 Easy Steps
  1. Step 1: Determine the Conversion Factor for the Recipe. ...
  2. Step 2: Convert all Weights in the Recipe to Ounces and all Volumes to Fluid Ounces. ...
  3. Step 3: Multiply Each Ingredient in the Recipe by the Conversion Factor. ...
  4. Step 4: Simplify and Round the Numbers for Easier Recipe Use.

How do you adjust a recipe if you need more or fewer servings? ›

To convert serving sizes, we incrementally adjust the individual serving size of each ingredient up or down. For example, if you adjust a recipe with 2 servings that needs 1 onion up to 4 servings, we'll divide the ingredient amount by 2 (1 onion / 2 servings = 0.5 onions) and then multiply that by 4.

What is the formula for scaling down a recipe? ›

Example. Scaling a 10-portion recipe down to six portions involves two steps: Divide 6 by 10, which gives you a conversion factor of 0.6. Multiply each ingredient amount by 0.6.

How do I adjust the recipe? ›

The most common way to adjust recipes is to use the conversion factor method. This requires only two steps: finding a conversion factor and multiplying the ingredients in the original recipe by that factor.

What is the formula for scaling? ›

The basic formula that is used for calculating the scale factor is, Scale factor = Dimension of the new shape ÷ Dimension of the original shape. In case, if the original figure is scaled up, the formula is written as, Scale factor = Larger figure dimensions ÷ Smaller figure dimensions.

What is the four-step process to adjusting the size of a recipe? ›

The factor method to adjust a recipe has four steps: Step 1: Determine the “multiplying factor.” Step 2: Convert different units to one unit. Step 3: Multiply each ingredient times the “multiplying factor.” Step 4: Change the new quantities to the largest unit of common weights and measures.

How do you adjust the cooking time for smaller portions? ›

If you're sautéing or searing a halved recipe, keep the heat and cook time the same but size down your pan. If you're cooking a halved recipe in the oven, keep the oven temperature the same but size down your cooking vessel and reduce the cook time by 1/3 — but check on it as you go.

How do you find the scale factor of a recipe? ›

Calculate the Scaling Factor

To do this, divide the desired number of servings by the original number of servings. For instance, if the original recipe serves four and you want to make it for 12, the scaling factor would be 12/4=3.

How do you convert measurements in a recipe? ›

Use the following dry measurement conversions to easily adjust your recipes.
  1. 1 tablespoon = 3 teaspoons.
  2. 1/4 cup = 4 tablespoons.
  3. 1/3 cup = 5 tablespoons + 1 teaspoon.
  4. 1/2 cup = 8 tablespoons.
  5. 1 cup = 16 tablespoons.

How do you change the number of servings in a recipe? ›

Adjusting the number of servings of a recipe is called scaling, and broadly speaking, it involves multiplying (to increase) or dividing (to decrease) the quantities of the individual ingredients in the recipe.

How did you adjust the recipe to produce the desired quantities? ›

Divide the desired yield by the original yield of the recipe. This gives you the conversion factor, which tells you how much to increase or decrease each ingredient. You can calculate it by dividing the number of servings you want by the number the recipe currently makes.

How to downsize a recipe? ›

Do the easy part first: The first step in scaling a recipe down is dividing the easy measurements by however much you're reducing the recipe. For example, if a recipe that serves four calls for one cup of chicken broth, simply divide by two; a piece of cake.

What is a formula in recipe? ›

A formula consists of ingredients and quantities needed to produce a specific quantity of some product. The formula includes processing steps and processing time required to produce that same quantity. Your formulations are often based on nominal quantities that will yield a standard output.

What adjustments should you keep in mind when doubling a recipe? ›

When doubling, you'll need to consider adjusting ingredient amounts, the size of your ingredient preparation tools, the size or quantity of your pots, pans or baking dishes and modifications to cooking time.

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