Is it possible to release the earthy citrus of a tomato in a soup without eating it?
I have this idea that maybe along with other ingredients for a savory Thai-inspired soup that I can boil whole tomatoes with it to balance the savory flavor with the earthy citrus that the tomatoes have. But, the tomatoes themselves aren't something that should be eaten with the rest soup because actually biting into a ripe tomato is overwhelming and inconsistent with it.
I haven't gotten much out of experimenting with it so far, so is there a way that I can just cook or boil the tomatoes with the soup so that it adds a the earthy citrus flavor but without being an eaten ingredient? I don't like the idea of canned tomato juice, I usually use fresh ingredients and it tastes more metallic.
Best Answer
Yes, it’s doable, but you will have to plan for an extra step and possibly few hours of preparation before you can start with your actual recipe:
The haute cuisine approach:
Make a clear tomato soup (sometimes also described as “essence” or “consommé”) and use this as an ingredient in your soup.
There are cooked and raw methods and both rely on separating the tomato (and other ingredients) from the liquid, either by very careful straining through a cloth or by an egg white raft.
Or simplified:
In a similar process, you can simply cook the tomato in the liquid you are going to use for your soup, strain out the solid tomato bits so that just the purée gets into the liquid and continue from there.
Even simpler:
Use a stick blender for the soup base in the previous step.
Note that the consistency and opaqueness will change depending on the method you choose, from thin to thick, from clear to opaque and the same goes for the flavor profile.
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How do you make tomato soup less tangy?
When you add baking soda to tomato soup (or sauce, or chili), it neutralizes the acid in the tomatoes. Not only will this make the tomatoes taste less acidic (good news if your tomatoes turned out more sour than you expected), but it also means that you can now add milk to your soup without risking curdling it.How do you keep tomato soup from curdling?
Temper the milk before adding it to the soup by gradually adding small amounts of the hot liquid, warming the milk slowly; then add it to the soup. Add a little heavy cream to the soup to help prevent curdling. In milk-based soups, add acidic ingredients, such as tomatoes and lemon juice, to the milk mixture.How to Make the Ultimate Cream of Tomato Soup
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Answer 2
What might be less effort than making a clear tomato soup is making "tomato water". Basically, you crush up the tomatoes (possibly coring and/or pealing first), put it in a fine cloth bag, and hang it to let the liquid drip into a bowl or other (non-reactive) vessel to catch it.
You could then add this towards the end of the soup-making, so you don't cook off the brighter notes that it gives.
But that being said, you might also want to look into sumac. It's a small red berry that has a citrusy flavor. I tend to see it most frequently ground up in middle eastern cuisine (eg, za'atar blend)
Answer 3
An alternative approach may be to use a sprig of tomato leaves and remove them. An old question of mine talks about this in more detail, and coincidentally it was discussed in today's Guardian in the context of adding more flavour to tomato sauces.
To me, your description of "earthy citrus" fits the leaves better than the actual tomatoes anyway.
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