I own both of these. They get confused with each other constantly — same corner of the kitchen, same general promise, wildly different jobs. Here's the honest side-by-side, including the part where you might not need either one.
They're not the same tool
This is the confusion I see most often, so let's clear it first.
The Brod & Taylor Sourdough Home controls temperature.
The King Arthur Sourdough Sidekick controls feeding.
That's the whole distinction. If you understand it, you'll pick the right one on the first try — and you might find out you don't need either.
One controls temperature. One controls feeding. Everything else is marketing.
What each one does
Brod & Taylor Sourdough Home — a small countertop box that holds your starter jar at a temperature you set, anywhere from 41°F to 122°F. It heats or cools to hold the setpoint. Plug it in, dial the number, put the jar inside, close the lid. It does one thing very well: it keeps your starter's environment steady so fermentation is predictable across seasons. It's too small for a bowl of dough — this is a starter appliance, not a proofing box.
King Arthur Sourdough Sidekick — a countertop feeder that automatically dispenses flour and water into a glass crock on the schedule you set, and stirs it for you. It has a built-in weight sensor and it reads ambient room temperature. It does not heat or cool anything. It automates the feeding part of starter maintenance, not the temperature.
Side-by-side
| Sourdough Home | Sidekick | |
|---|---|---|
| What it controls | Temperature | Feeding schedule |
| Temp range | 41–122°F, heats and cools | Ambient only — senses, doesn't heat |
| Feed schedule | Manual | Automated, set on the device |
| Price | ~$99–$150 | $179.99 |
| Warranty | 1 year, 3 years if you register it | 1 year (FirstBuild / GE Appliances) |
| Cleaning | Wipe the interior | Crock and lid are hand-wash only |
| Noise | Silent | Paddle runs every couple of hours; you hear it |
| Best for | Cold kitchens, seasonal consistency | Baking often enough to want auto-feeding |
| Not great for | Anyone in a warm kitchen who feeds regularly | Casual bakers, small starters |
When to buy the Sourdough Home
- Your kitchen swings below 68°F for months at a time
- Your starter is unpredictable — sometimes it doubles in four hours, sometimes it needs twelve
- You want fermentation to feel the same in January and July
- You've tried the "oven with the light on" trick and it's inconsistent in your oven
- You bake weekly or less, but you want it to work every time
At around $99, it earns its price in one winter if you were about to give up on sourdough because your starter kept sulking.
When to buy the Sidekick
- You bake multiple times a week and starter maintenance has become a chore
- You want your starter fed on a strict schedule you can't always keep yourself
- You already have temperature handled — a Sourdough Home, or just a warm kitchen — so feeding is the last variable left
- You like automation for its own sake and $179 is a comfortable price for the time it gives back
The Sidekick doesn't replace attention. It puts the feeding on rails. If you already forget to feed your starter for a week at a time, the Sidekick fixes that. If you already feed it religiously and only wish it were warmer, the Sourdough Home is what you want.
Do you need both?
Only if you bake often enough that both problems bother you.
I use both because I bake weekly and my kitchen runs cold. The Home holds my starter at 73–78°F year-round, and the Sidekick handles the feeding on the days my energy is low. Together they take starter maintenance off my plate almost entirely. That matters more to me than the roughly $280 combined price — but I want to be clear that it's a lot of money for a jar of flour paste.
Learn to bake before you buy hardware. Neither of these is a beginner's tool.
For most home bakers I'd say: start with the Sourdough Home. Temperature is the variable that trips up more sourdough starters than any other. If, a year in, you're baking often enough that hand-feeding feels like a chore, then add the Sidekick.
Cheaper alternatives to consider first
Before you spend $99 or $179, know that these also work — just with more variance:
- Oven-light-only method — see my Using the Oven Proof Setting guide. Free. Consistent enough for most kitchens.
- Seedling heat mat plus a thermostat — about $30 combined. Same idea as the Sourdough Home for less money, and less refined.
- A warm spot on the counter — near the fridge, on top of the router, on top of a running dishwasher. Costs nothing. Trial and error.
If any of these are working for you, don't upgrade until they stop.
Bottom line
- Baking sometimes, kitchen runs cold: Sourdough Home
- Baking often, feeding is the pain: Sidekick
- Both problems, and you'll bake for years: both
- Just getting started, or unsure: the free and cheap options first
Learn to bake before you buy hardware. Neither of these is a beginner's tool — they're maintenance tools for people who've already committed. If you're still building your first starter, start with the starter guide instead, and spend the $99 on flour.
For the rest of what's in my kitchen, see the Kit page.