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.

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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

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

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 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 you resize a recipe based on one ingredient? ›

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. The end result is 2 onions (0.5 onions x 4 servings).

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 4 step process to adjusting the size of a recipe? ›

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 I downsize a recipe? ›

The trick is to switch your measurements to units that are simpler to split, such as tablespoons and teaspoons. Key Measurement Conversions for Scaling Down Recipes: 1 cup = 16 tablespoons (tbsp) = 48 teaspoons (tsp) Half of 1 cup = 8 tablespoons = 24 teaspoons.

What is the method of scaling? ›

Scaling methods are divided into two main categories, open questions and closed question. Scaling is the process of generating the continuum, a continuous sequence of values, upon which the measured objects are placed. An open question is one in which the respondent does not have to indicate a specific response.

How do you scale servings? ›

The way to scale a recipe by number of servings is to multiply the original amount by the desired serving size and then divide by the original serving size.

What is the formula for portion size? ›

How do I calculate serving size? To determine serving size, you can weigh the food and divide it by the number of servings. Many recipes also provide the recommended serving size.

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

If you need eight servings and the recipe makes six: 8 ÷ 6 = 1.3. This is your conversion factor which you'll use to find out how much of each ingredient you'll need. Second, multiply each ingredient in your recipe by the conversion factor. Third, round up or down a little bit when conversions are hard to measure.

What is the two fold process for scaling a recipe for non multiple servings? ›

Explain the two-fold process for scaling a recipe for non-multiple servings. Divide each ingredient amount by the number of people the original standardised recipe serves and write down what the 'per person' measure is • Multiply the 'per person' measure for each ingredient by the number of people you need to serve.

When changing the yield of a recipe How is the scaling factor calculated? ›

Calculate the scaling factor by dividing the number of servings (or grams) you want to make by the recipe yield. Example: This recipe yields five servings. If you are making nine servings, the scaling factor is 9 ÷ 5 = 1.8.

What steps should be followed to decrease the size of a recipe? ›

What steps should be followed to decrease the size of a recipe. Divide the desired yield, multiples, each ingredient, amount by the result, convert temperature, and make adjustments in equivalent, time.

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