Why do Brussels sprouts only taste good when cut?
My mom always used to cook or steam Brussels sprouts whole. I always hated them and still do now if they are prepared that way. They tend to get a very sharp, slightly bitter vegetable taste, similar to over-boiled fennel.
But on the other hand, then cut in halves or quarters they taste amazing. Especially fried in butter/olive oil, but also when boiled, with a hint of lemon juice I started to absolutely love them.
I was wondering why that is that they do not develop that distinctly disgusting flavour when they are cut?
I have some theories, but I would love to hear your thoughts on this:
- Maybe by the time the centre is cooked the outer part is already overcooked.
- The caramelisation that happens much more on the cut side makes them taste better. Perhaps the sweetness from that overtones the bitter flavour?
- Or is there actually some chemical compound in Brussels sprouts that can not evaporate when they're whole?
Best Answer
I think you're on to something with regards to cut pieces cooking more evenly than whole sprouts. But I also think you might be seeing causation where you should just be seeing correlation.
The "classic" way to cook Brussels sprouts is to leave them whole and steam them. That results in minimal flavor development. When overcooked, chemicals are produced with bitter, garlicky, and/or sulfurous overtones. Similar chemicals are produced when long-cooking many other other green vegetables, and are likely what you associated with overcooked fennel. Since no other "interesting" tastes are really produced by steaming, those tastes take center stage, no matter how much butter you put on the sprouts.
Cooking the sprouts at high heat, as restaurants generally do these days, results in caramelization and Maillard browning. Those taste good, and dominate the flavor profile, covering up some of the unpleasant tastes which steaming (but also other cooking methods) produce. Getting a good sear when shallow-frying Brussels sprouts requires cutting them, so there's an association between how they're cut and how they're cooked.
There's another aspect to "modern" Brussels sprouts. In the 1990s, agricultural botanists in the Netherlands bred Brussels sprouts with much lower bitterness than classic cultivars; over time, these new sprouts took over the market. So cooking processes aside, Brussels sprouts today are less bitter than the ones from your childhood. (For that matter: as you age, bitter tastes become less unpleasant.)
As I mentioned, you may be on to something with regards to cut pieces cooking more quickly, not giving the outside a chance to overcook, but I suspect what you're primarily seeing is just the result of modern cooking methods compared to the frankly unpleasant results of classic "steam 'em for a while" treatment.
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Quick Answer about "Why do Brussels sprouts only taste good when cut?"
The flavor components that contribute to a bitter flavor are concentrated in the center of the Brussels sprout. If you slice the the veggie in half, it helps to release some of those compounds during the cooking process. Smaller is better when it comes to tenderness and flavor.What makes brussel sprouts taste better?
Smoked bacon, almonds, lemon zest and double cream add tons of extra flavour and texture to Brussels sprouts. This is a rich, tasty dish with a bit of zing that's perfect for any sprout-shy kids who like their food sweet and creamy.Should I cut my brussel sprouts?
No matter how you're going to cook your Brussels sprouts, you'll want to trim them first. At the base of each sprout is the spot where it was originally connected to the plant. Unless you've just cut the sprouts off the stalk yourself, this area will have become dry and browned during storage.What takes the bitterness out of brussel sprouts?
2) Do: Add salt but we do know that salt takes down the bitterness of Brussels sprouts. It's not entirely clear how or why salt counters bitterness, but it does. Make sure you salt Brussels sprouts at the beginning of the cooking process. And then go in with a good pinch of sea salt or kosher salt before serving.Why do my brussel sprouts taste weird?
A 2011 study by Cornwall College found that sprouts contain a chemical, similar to phenylthiocarbamide, which only tastes bitter to people who have a variation of a certain gene. The research found that around 50 per cent of the world's population have a mutation on this gene.The Biggest Mistake You're Making With Brussels Sprouts
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Answer 2
From a strictly scientific standpoint, you're spot on that cutting them in half reduces bitterness. Brussel sprouts contain thiocyanates (a type of glucosinolate) that cause bitterness, and are more heavily concentrated in the center of the sprout[citation needed]. Thiocyanates are broken down with heat and acid, so cutting them in half helps more bitterness to be released during the cooking process.
This study, while about thiocyanates in a completely different process/context, shows conclusively the breakdown of the molecule being dependent on both heat and PH levels - so lemon juice/other citruses for acid are also making a big difference(and cutting is increasing the surface area in general to increase the reaction).
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