Once I first began working at Severe Eats, I wrote an article that explored the results of pre-soaking grains on their style, texture, and cooking time. What I discovered was that soaking did little or no to enhance the grains, and I concluded that skipping the pre-soak was usually the best way to go. Then I closed with a line that, on the time, appeared like a given.
“I, for one, will simply settle for my grains as they’re and wait patiently for them to do their factor. That, or I am going to attain for one thing I do know will work: my strain cooker.”
It appeared apparent sufficient: Of course a strain cooker could be the easiest way to cook dinner grains. I imply, I like my strain cooker and the magic it routinely performs. It cooks beans quicker, shares quicker, robust cuts of meat quicker, and—one among my favourite tips—octopus, which turns into tender very quickly. Why would not it work simply as properly with grains?
However as quickly because the article was dwell on the positioning, I began to surprise if it was actually true. The query gnawed at me—what if I had cavalierly said one thing as reality and been completely fallacious about it?
The Check
I knew I needed to put my assertion to the take a look at. To do it, I cooked each complete (bran-on) and pearled/polished (bran largely eliminated) grains* in common boiling water and a strain cooker, then in contrast the outcomes. The grains I used had been polished (pearled) farro, whole-grain spelt, whole-grain rye, and whole-grain wheatberries. And to be doubly thorough, I did some batches with grains that had been pre-soaked (simply in case that made some type of distinction the place the strain cooker was involved), and others with grains that I cooked straight from dry. I additionally examined utilizing two completely different strain cookers, to account for potential variations in cooker sorts: my very own Kunh Rikon stovetop mannequin, and the SE take a look at kitchen’s Breville electrical strain cooker.
Earlier than going into element on the outcomes, a fast word on how strain cookers work, and the way I used them in these assessments. Stress cookers entice steam contained in the vessel; because the trapped steam builds up, the strain contained in the cooker will increase. As a result of the boiling level of water is tied to atmospheric strain, rising the strain within the cooker ends in larger temperatures (water boils at 212°F at sea degree, outlined as roughly 1 bar atmospheric strain; inside a strain cooker, the water’s temperature can go as much as round 250°F, relying on the cooker and its strain settings).
As a matter of follow, cooking occasions for strain cookers begin as soon as the cooker is totally pressurized, and don’t embody the pre-heating section. As soon as cooking is full, there are 3 ways to depressurize a cooker, which in any other case cannot and should not be opened—except taking a shower in an explosion of steam feels like a good suggestion to you.
- The primary is to press the cooker’s steam-release valve, which vents the steam trapped contained in the cooker, dropping the strain to the purpose the place the lid may be opened.
- The second is to run the cooker underneath cool water, which cools the cooker, condensing the steam inside; because the steam condenses, the strain drops (this methodology shouldn’t be used on electrical cookers).
- The final is to let the cooker settle down by itself, till the strain has dropped sufficient to open the lid; this isn’t a great methodology for meals that may overcook as they sit contained in the cooker.
For my assessments, I used each the steam-release valve and the tap-water methodology, for quickest strain launch.
The Outcomes
Earlier than going into element, I am simply going to get this out of the best way: I hereby retract the closing line of my earlier piece, as a result of I not suppose that strain cookers do a lot for cooking grains.
Let’s take a more in-depth look.
Pre-Soaked Grain Assessments
“This take a look at uncovered one of many greatest dangers of strain cooking grains: as a result of a strain cooker is a sealed vessel, you’ll be able to’t see the meals contained in the pot whereas it is cooking.”
Regardless that I might already decided that pre-soaking is not vital for cooking most grains, I made a decision to incorporate pre-soaking in my assessments right here, simply in case it ended up being an essential consider strain cooking.
The primary soaked grain I cooked was polished farro. Proper off the bat, this take a look at uncovered one of many greatest dangers of strain cooking grains: as a result of a strain cooker is a sealed vessel, you’ll be able to’t see the meals contained in the pot whereas it is cooking.
For a comparatively quick-cooking grain like polished farro, that may be a dangerous factor. In common boiling water, the farro turned tender in about 20 minutes, and it was straightforward to observe its progress within the pot.
With a strain cooker, it took about 10 minutes for the cooker to turn into pressurized, and I then let the farro cook dinner for five minutes as soon as strain had been reached. I depressurized the cooker with the steam-release valve, and wasn’t pleased with what I discovered inside: blown-out, overcooked farro grains.
After all an excellent shorter cooking time may have prevented this, however it underscores the danger of overcooking some meals in a strain cooker. Primarily based on this take a look at, quick-cooking pearled grains are higher off simply being boiled: your time financial savings are marginal in a strain cooker anyway when you issue within the preheating and depressurization occasions, and the shortcoming to see the grains means a a lot larger probability of letting them go too far.
Subsequent up, I cooked soaked whole-grain spelt. Right here, I’ve to confess that I ended up letting this spelt soak for 3 days earlier than testing it, as a result of, properly, life occurs. That really proved to be fascinating: soaking grains in a single day (about 8 hours) might not make a lot distinction, however soaking grains for 3 days does change cooking occasions. With such a prolonged pre-soak, the boiled spelt took about 25 minutes to cook dinner. Within the strain cooker, I let it go for 10 minutes, not together with the preheating time of about 10 minutes, plus depressurization time. Altogether, it was within the strain cooker for a bit of over 20 minutes.
As you’ll be able to see within the photograph, the starchy contents of the grain needed to blow out in each cases, probably the results of being super-hydrated after such a protracted pre-soak. Fortunately, the bran held all of it collectively and maintained its nice, chewy texture, proving that it is extremely arduous to overcook complete grains. Nonetheless, the 2 samples had been indistinguishable from one another. (For the file, I do not suppose 3 days of pre-soaking is definitely worth the discount in cooking time.)
As soon as once more, the strain cooker wasn’t demonstrating a lot of a bonus, although at the least with bran-on complete grains like spelt, the danger of over-cooked, blown-out grains is way much less of a problem.
No-Soak Grain Assessments
Thus far, the strain cooker wasn’t impressing me. However perhaps the pre-soaking was leveling the taking part in area. Possibly grains cooked from dry would do higher within the strain cooker.
So for my subsequent assessments, I attempted each dry whole-grain spelt and wheatberries.
Right here, the boiled spelt cooked in about 40 minutes. And as soon as once more, the strain cooker was finished only a hair quicker, about 35 minutes together with pre-heating and depressurization. Out of the pot, I struggled to discover a distinction between the 2. Within the photograph above, you’ll be able to see that the boiled spelt at left appears to be like barely drier than the pressure-cooked spelt, however as I tasted them side-by-side, I could not discern a lot of a distinction. I made a decision to change to my macro lens for a more in-depth have a look at the grains.
As I zoomed in, I had a tougher and tougher time distinguishing between the 2. Whereas the piles of grain had initially appeared a bit completely different, up shut they appeared mainly the identical. Then I noticed that I had drained the boiled spelt first, permitting it extra time to air-dry; because the pressure-cooker spelt sat out, it began trying increasingly more just like the boiled spelt.
As for the wheatberries, they carried out nearly the identical, of their case 50 minutes for the boiled batch, and 40 minutes for the strain cooker. Rye grains, too, produced comparable outcomes.
Conclusion
In all circumstances, the strain cooker was barely quicker than a pot of standard boiling water, however to my shock, the variations had been small—about 10 minutes most often. The grains themselves had been indistinguishable from one another, no matter how they had been cooked, aside from the pearled farro, which overcooked within the strain cooker. Given these outcomes, I am afraid to say the strain cooker does not have a drastic impression on the cooking time or style and texture of grains, and, within the case of polished/pearled grains, has a higher threat of ruining them.
Some of the deceptive issues is the time given for strain cookers: Whereas it is smart to solely begin the clock as soon as the cooker has turn into pressurized (since completely different cookers and portions of meals inside may have completely different heat-up occasions), it hides the true cooking time, which incorporates the heating up and depressurization occasions. For grains, that finally ends up erasing a lot of the obvious time-saving advantages.
I am going to nonetheless use my strain cooker to cook dinner complete, bran-on grains, as a result of it does not do any hurt in any respect, however I am going to do it understanding the truth, which is that I am truly reaching for a software that, at the least for this job, does not truly work a lot better than a daily outdated pot of water.