LONG review - includes how to clean off hard water spots that look like rustThis is a KETO / LOW CARB best friend - Makes eggs made fast, so easy, no-brainer hard boiled eggs. How did I get by without this?I was buying (6) pre-shelled EGGLANDS BEST hard boiled eggs at $3.75 a pack, mostly because I had such a hard time making hard boiled eggs without them coming out MEH at best. I tried all the hacks, even Tim Ferris' youtube version, and they would never peel right, took a lot of time, just made me miserable... so I just paid for them.We started a KETOGENIC / LOW CARB diet lifestyle, and with (3) people (me / hubby / son), that means we go through A LOT of eggs each and every week. They kept begging me to make deviled eggs, but I just couldn't justify the pre-cooked hard boiled version at $3.75 a pop for SIX eggs from the store.So I started researching how to make easy eggs, and this rapid egg cooker kept coming up. There's a smaller version (cooks up to 8 eggs), but this is just a few dollars more, and has a SMALL footprint on the counter, stacks up for easy storage, so I'm glad I went bigger.It comes with a little water measuring cup, with a punch on the end to make a hole in the top of the eggs before you cook them. This really makes it easier to take the shell off in the end, so by all means, use it! I believe that the water, once steamed off, makes the device buzz to tell you that the eggs are ready. I haven't made soft boiled eggs yet, but have made medium and hard boiled, and now I have warm, yummy eggs every morning for breakfast - super cheap, super easy!Here's how I make hard boiled eggs with this cooker:-- Set up device, read instruction quick sheet, determine how much water I will need for a dozen hard boiled eggs-- Fill the measuring device with water, put in bottom of device, and then set up plastic egg holder/bottom level-- Punch holes in the FAT SIDE of 8 eggs, put in plastic egg holder/bottom level-- NOTE - Be sure to put the side with the hole UP, so the egg doesn't leak into the unit-- NOTE - Puncturing the FAT SIDE of the egg will make it MUCH EASIER to remove the shells later... trust me, this is a good idea-- Put outside plastic level one over eggs, and then set up plastic egg holder/top level-- Punch holed in top of 4 remaining eggs, put them in plastic egg holder/top level-- Put top on device, check to ensure it's together firmly, steam hole pointing AWAY from any potential burn hazards-- Turn on blue button, and then wait until it BUZZES to let me know it's done-- While waiting, I set up an ice bath for the eggs in sink. I use a BIG BLUE ice pack (for coolers) or two to make it easy, big bowl, water.-- When it BUZZES, I turn off the blue button, lift the lid carefully to avoid steam burn-- Quickly move eggs from device to water-- NOTE - sometimes, some egg will OOOZE out of the top of the egg hole I made. No worries, it's easy to take off, and it's cooked too-- After 10 minutes, I come back to the egg bath, and start to run cold water in the sink-- One by one, I will crack each egg near the top/the egg hole I made-- Under mild cold running water, I peel away the shell. Super fast and easy!-- NOTE - make sure you break the membrane of the egg when you take off the first piece of shell, this will make it very easy-- Put the shelled eggs on a plate with a paper towel, then transfer to fridge OR start making deviled eggs (yum!)Many people have noted that using this cooker, they will get discoloration (rust colored, or white, spots) on the hot plate portion. That is from hard water, and it is really easy to clean. Here's how I do it:-- Get a magic eraser (you could use a sponge, but I like these best)-- Use the measuring cup, and put 1 part white vinegar, 9 parts water, then put in cooker - DO NOT OVERFILL-- You could add a bit more vinegar, no more than 3 parts to 7 parts water-- Just bring it to a boil, without the plastic egg holder/bottom level or any of the other parts. You're just trying to get it to bubble.-- TURN OFF quickly, unplug device, and CAREFULLY dump out the water mixture-- You should notice that some of the spots have already come off the device - thanks, vinegar!-- Use a wet MAGIC ERASER, or sponge, to wipe down the hot plate. It's still warm, so be careful!!!-- Towel dry - poof! Silver, shiny, just like new!You will have to experiment with the egg cooker to find your sweet spot for soft boiled eggs, as other reviewers have noted, but I really enjoy the medium boiled eggs every morning for breakfast. See my photo to see a typical keto breakfast... just add coffee and heavy cream, and you're super satisfied for HOURS. The red sauce you see is Tabasco Chipotle Pepper Sauce, which I also use a lot... check it out.If you're going to make and store hard boiled eggs in the fridge, or transport them, please consider Snapware - Snap 'N Stack Food Egg 2 Layer case (look it up on Amazon). You get (2) of these for $20, and you can easily store hard boiled or deviled eggs in this thing with ease. Makes it so much easier to be the KETO Meow-ma, without being in the kitchen 24/7 for my hungry boys.If this review helped or entertained you, please click HELPFUL, and thanks for your time and attention! I'm happy to answer any questions you may have for me.