What's a good substitute for Spanish onions?

In my 50+ years as a food-a-holic, this is only the second recipe that lists Spanish onion as an ingredient. The first was the terrific Shrimp Provincale (sic) in Craig Claiborne's 1973 reprint of "Cooking with herbs and spices." That recipe sent me on a lifelong search for Spanish onions at the grocery stores in San Francisco (successful) and Asheville (futile). For the shrimp dish, which calls for raw Spanish onions, I've substituted red onions with good results.
Here's my question for the cooked Spanish onions in Ina's recipe. Can I find them by another name in local grocery stores and, if not, what is the nearest substitute?

carolwhitlock@gmai.com
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2 Comments

702551 May 4, 2025
You don't explicitly state where you are currently located however here in the SF Bay Area, I would seek out Maui, Vidalia, or Walla Walla onions, all of which are sweeter than the typical supermarket onion.

Your best course of action might be to ask your local grocer (a gourmet type place rather than a supermarket) or visit your local farmers market and look for a stand that sells multiple varieties of onions since the varieties I mentioned might not be available in your area.

There's also the issue of seasonality where the varieties I mentioned aren't available all year long. Cost might also be a consideration since it might be a long trip from Maui or Washington state to where you live. Might better to seek something grown in your neighborhood.

Best of luck.
 
Nancy May 4, 2025
Wow - a voice from the past! Working through "Cooking with Herbs and Spices"(Craig Claiborne) was a great learning experience for me as a home cook who loved seasonings.

I found a couple responses...some say use a sweet onion, others say they are pronouncedly sweeter than Spanish.

Most say a yellow onion or shallots as good substitutes.

One gave a good description of why Spanish onions are different - grown in low sulfur soil, which lets sweetness come through.

https://earmata.com/difference-spanish-onion-yellow-onion/
 
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