There’s nothing quite like a creamy, golden Jerusalem artichokes gratin fresh out of the oven. Its nutty, earthy flavor paired with cheesy goodness is pure comfort food—and what better way to use those beautiful tubers from your garden? If you’re like me, you’ve probably struggled to get those perfectly thin, even slices that make restaurant-quality gratins so spectacular.
Anyone who’s worked with Jerusalem artichokes (also known as sunchokes) knows they can be particularly tricky to prep. Their knobby, irregular shape and firm texture make them challenging to slice uniformly with a knife. Add to that their tendency to oxidize quickly once cut, and you’ll understand why many home cooks shy away from these delicious tubers. I’ve spent countless hours in the kitchen wrestling with these stubborn roots, trying to achieve those paper-thin slices that are crucial for even cooking and that luxurious, layered presentation that makes a gratin truly special.
After years of gardening and cooking these wonderful tubers (check out our complete guide to growing Jerusalem artichokes), I’ve discovered that the secret lies in having the right tool: a quality mandoline slicer. Not only does a mandoline make quick work of even the most gnarled specimens, but it also ensures consistent thickness throughout—a game-changer for achieving that perfect texture where every layer is tender but not mushy. Today, I’m excited to share my top picks for mandoline slicers that will help you achieve gratin perfection, plus a mouth-watering recipe featuring our homemade black garlic that will knock your socks off!
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The Health Gold Mine in Your Garden
Before we dive into the tools, let me share why I’m so passionate about Jerusalem artichokes. These humble root vegetables are absolute nutritional powerhouses that deserve a starring role in your healthy cooking routine! Did you know that a single serving of Jerusalem artichokes contains more iron than spinach? Here’s what makes these garden gems so special:
- Prebiotic Powerhouse: These tubers are loaded with inulin, a type of soluble fiber that acts like a feast for your gut’s good bacteria. This means better digestion and a happier microbiome! Studies have shown that regular consumption can significantly improve gut health within just a few weeks.
- Nutrient-Rich Profile: They’re packed with potassium (great for heart health!), iron (hello, energy boost!), and thiamin (your brain’s best friend). Plus, they’re an excellent source of copper and phosphorus, which support bone health and energy metabolism.
- Blood Sugar Friendly: Unlike regular potatoes, Jerusalem artichokes have a minimal impact on blood sugar levels. This makes them a perfect choice if you’re watching your carbs or managing diabetes. The “Low-Glycemic Gardening Cookbook” by Maria Torres offers some brilliant recipes specifically designed around these beneficial tubers.
Why You Need a Mandoline Slicer
A mandoline slicer is a kitchen game-changer, especially for dishes like gratins where uniform slices are key. Here’s why it’s worth investing in one:
- Precision and Consistency: Mandoline slicers create even slices that cook evenly, ensuring no undercooked or mushy pieces.
- Saves Time: What could take 10 minutes with a knife takes just a couple of minutes with a mandoline.
- Versatility: Beyond Jerusalem artichokes, you can use it for potatoes, carrots, zucchini, and more.
Top 5 Mandoline Slicers for Perfect Gratin
Here are five excellent mandoline slicers that will make prepping Jerusalem artichokes (and other veggies) a breeze:
- OXO Good Grips Mandoline Slicer
- Three Slice Thickness Settings: Adjustable for precise slicing with ease.
- Clear Viewing Window: Easily see your slices below for perfect results.
- Versatile Usage: Slice on a cutting board, plate, or hook over a bowl for convenience.
- Safety Features: Food holder protects hands and covers the blade when not in use.
- SUPMAKIN Safe Mandoline Slicer
- Slice Without Fear: Hidden blades prevent direct contact for safe slicing.
- Versatile Cutting: 8 thickness settings (0.5mm to 8mm) and 2 shape controls for customized slicing, dicing, chopping, and julienning.
- Stable and Safe: Suction base ensures stability while cutting, with blades securely tucked away for accident-free use.
- Portable and Space-Saving: Collapsible design makes it easy to store in cabinets or drawers and portable for on-the-go use.
- Mueller Multi-Blade Adjustable Mandoline
- 12 Versatile Blades: Includes 8 interchangeable blades and 4 Spiralizer options for creating veggie pasta, salads, and garnishes with precision.
- Premium Quality: Made with grade 420 stainless steel blades and food-grade, BPA-free materials for durability and safety.
- Compact and Convenient: Features a food container and holder to prevent slipping, a compact design for easy storage, and dishwasher-safe parts with a scrubbing fork for effortless cleaning.
- Healthier Eating Made Easy: Saves time and effort in meal prep, helping you incorporate more vegetables into your diet while reducing reliance on fast food.
- Exceptional Customer Support: Includes 24/7 live customer care via toll-free number or chat for unmatched assistance.
- Fullstar Mandoline Slicer
- Versatile 9-in-1 Design: Includes 8 interchangeable blades and a peeler for slicing, grating, and spiralizing.
- Compact and Convenient: Fully disassembles with a blade box for easy storage and organization.
- Safety First: Features a finger guard, protective glove, and non-toxic, BPA-free ABS plastic.
- Mess-Free Cooking: Comes with a catch tray for easy cleanup and a non-slip base for stability.
- Easy to Clean: Dishwasher safe and includes a specialized cleaning tool.
- Great Gift Idea: Perfect for home cooks, men, and women, making it an ideal kitchen gift.
- Swissmar Borner V-Slicer
- Made in Germany: High-quality construction with a tough ABS plastic frame and slip-resistant rubber feet for stability.
- Sharp Surgical-Grade Blades: Includes 3 inserts (7mm, 3.5mm, and thick/thin plane slice) for 10 different cuts, including slicing, julienne, shredding, cubing, and making French fries.
- Adjustable Thickness: Patented push button allows quick thickness adjustments without removing the inserts.
- Safety First: Ambidextrous food safety holder protects hands and provides control with minimal pressure, while prongs secure food in place.
- Convenient Storage: Blade insert holder doubles as a drying rack and protects blades when not in use. Includes an instruction manual for ease of use.
Adding a Gourmet Twist: The Magic of Black Garlic
To take your gratin from delicious to absolutely exceptional, let me share my favorite secret ingredient: black garlic! If you’ve never tried it before, you’re in for a treat. Our homemade black garlic adds a complex, almost caramelized sweetness that perfectly complements the earthy notes of Jerusalem artichokes. Think of it as regular garlic that’s gone through a remarkable transformation – like turning Clark Kent into Superman!
For those of us focused on growing and eating healthy food, black garlic is a nutritional powerhouse. Through the fermentation process, it develops twice the antioxidants of regular garlic, making it an excellent addition to your wellness-focused kitchen. Plus, if you’ve ever avoided garlic due to digestive discomfort, you’ll be pleased to know that black garlic is much gentler on your system. The fermentation process breaks down many of the compounds that can cause that post-garlic upset. If you want to know more about it check out ‘Black Garlic: The 2025 Superfood you need to try now!’
Here’s what makes black garlic so special in this dish:
- The deep, molasses-like sweetness balances the earthiness of Jerusalem artichokes
- Its soft, paste-like texture melts seamlessly into the cream sauce
- The umami notes add an extra layer of depth that will have your dinner guests asking for your secret
- The enhanced antioxidant content makes this comfort food even better for you
To incorporate it into your gratin, simply mash 3-4 cloves into a paste and whisk it into your cream mixture. I find that warming the cream slightly helps the black garlic distribute more evenly. Start with three cloves and adjust to your taste – remember, black garlic is more subtle than regular garlic, so you can be generous without overpowering the dish.
For those growing their own garlic, why not try making black garlic at home? It’s a wonderful way to preserve your harvest and create something truly special. Check out our detailed guide on making black garlic at home – it’s easier than you might think, and the results are absolutely worth the wait!
Jerusalem Artichoke and Black Garlic Gratin
Here’s a foolproof recipe to make the most of your homegrown Jerusalem artichokes:
Ingredients:
- Jerusalem artichokes: 500 g (thinly sliced)
- Black garlic: 3 cloves (mashed into a paste)
- Heavy cream: 250 ml
- Milk: 150 ml
- Parmesan cheese: 50 g (grated)
- Gruyère cheese: 50 g (grated)
- Butter: 20 g (for greasing the dish)
- Fresh thyme: 1 tsp (chopped)
- Salt: 1 tsp
- Black pepper: ½ tsp
Instructions:
- Preheat the Oven: Set your oven to 180°C (350°F).
- Prepare the Ingredients: Use a mandoline slicer to create thin, even slices of Jerusalem artichokes. Grease a baking dish with butter.
- Make the Sauce: In a saucepan, combine cream, milk, mashed black garlic, thyme, salt, and pepper. Warm gently over low heat (don’t boil).
- Assemble the Gratin: Layer the sliced Jerusalem artichokes in the dish, pouring a portion of the cream mixture over each layer. Sprinkle with Parmesan and Gruyère cheese between layers. Finish with cheese on top.
- Bake: Cover with foil and bake for 25 minutes. Remove the foil and bake for another 10-15 minutes until the top is golden and bubbly.
- Serve: Let the gratin rest for 5 minutes before serving. Pair with a crisp green salad for a complete, healthy meal.
Final Thoughts
Creating the perfect Jerusalem artichoke gratin is a journey worth taking. With the right mandoline slicer and these tips in your back pocket, you’re well on your way to making restaurant-worthy dishes from your homegrown harvest. Remember, cooking is about joy and experimentation – don’t be afraid to put your own spin on the recipe!
Have you tried growing Jerusalem artichokes in your garden? Share your experiences in the comments below! And if you’re interested in expanding your kitchen garden, don’t forget to check out our complete guide to growing Jerusalem artichokes for expert tips and tricks.
Happy slicing and happy cooking!