Does it seem that when you go to the store to buy produce for a recipe, everything is super-sized? If your recipe calls for one onion, how much onion is that? If your recipe calls for one small onion, what do you do when nothing in the onion bin seems small? In this Cooking Tip, I want to take a closer look at produce sizes and how to navigate your recipes.

If you have read many of my prior Cooking Tips, you will know that I strongly advocate weighing ingredients (preferably in metric) when baking. With non-baking recipes, weighing is not nearly as important. However, what do you do when faced with the above questions? As a prelude to this post, you may also wish to look at these related posts.
I do not have the time to discuss every item of produce, but I will look at three that commonly lead to questions about amounts. That would be onions, garlic, and citrus.
An over-arching principle is that how much of these items you use in your recipe may vary from cook to cook. Some of you may like more onions or garlic than others. As long as you like how your recipe turns out and one flavor is not overpowering the others, you do not have to be precise in how much you use. The other, but probably most important, tip is to taste your dish as you go along. If you are going to use more of one of these items than the recipe calls for, do not add it all at once. Instead, start with less and let your palate guide you on how much to add.
Another caution is that if the recipe calls for one cup of chopped onion, that can vary from cook to cook. If I were to chop an onion to measure a cup but then weigh it on a scale, and another person were to do the same, they would likely weigh different amounts depending on how small the onion is cut and how much it is packed into the cup. Therefore, even if your recipe calls for a volume measurement, it will not be exact.
Even understanding the above cautions, some want a bit more guidance. The rest of this Tip is for those readers. Besides discussing each item of produce, I also list some prior Cooking Tips for more information.
Onions

Sometimes a recipe will just call for “one onion,” and other times, it may specify “one medium (or small or large) onion.” How much should you start with?
If a recipe does not specify what size of onion, assume it is a medium onion. If all you can buy at the store are very large onions (as I usually see), you will need to use less than the entire onion.
| Size | Amount before prep | Amount after prep | Visual Cue |
| 1 small onion | 2-4 ounces | ¼-½ cup chopped or sliced | Billiard ball |
| 1 medium onion | 4-7 ounces | 1 cup chopped or sliced | Baseball or tennis ball |
| 1 large onion | 7-9 ounces | 1-1½ cups chopped or sliced | Softball or grapefruit |
Garlic

A head of garlic is what you buy fresh in the store, and one head contains many cloves that may be of different sizes. Rarely does a recipe call for a head of garlic. One exception is when the recipe calls for roasting a head and then squeezing the contents out for subsequent use.
One medium head of garlic typically weighs two ounces before preparation. It will contain 10-15 individual cloves or enough to produce about six tablespoons of minced garlic.
Most recipes will call for a number of cloves, but do not typically specify the size of the clove. Therefore, just as with onion, if the recipe calls for one clove, assume they mean a medium-sized clove.
| Size | Yield |
| 1 extra-large clove | 1 tablespoon minced |
| 1 large clove | 1-2 teaspoons minced |
| 1 medium clove | ¾-1 teaspoon minced |
| 1 small clove | ½ teaspoon minced |
Citrus

With citrus fruit, not only will different fruits yield different amounts of juice despite being about the same physical size, but the amount that fruit will yield will vary depending on how well you juice them. An electric juicer will almost always give you more than a manual juicer.
| Size | Weight | Juice Yield | Zest Yield |
| 1 medium lemon | 4 ounces | 3 tablespoons | 2-3 teaspoons |
| 1 medium lime | 2½ -3 ounces | 1-3 tablespoons | ½-1 teaspoon |
I also want to draw your attention to a small reference book about this subject. I use it frequently. It is Food FAQs by Linda Resnick and Dee Brock. To quote the authors:
“After years of researching, testing, weighing, chopping, pureeing and measuring, we’ve compiled this handy volume with hundreds of substitutions, yields and equivalents that can help you buy exactly what you need and make-do with what you already have.”
I just want to remind you that the above discussion deals with these ingredients being used in savory cooking. If you are a baker, please consider using a kitchen scale. Outside of baking, you have much more leeway to adjust amounts depending on your palate. The amounts I gave you should help you in the grocery store when deciding how much of an item to buy, and will help you with a starting point.

























