10 Most Alkaline Vegetables Ranked by PRAL (With Table)

Spinach is the most alkaline everyday vegetable in the Basentracker database. The reason is its exceptionally high potassium and magnesium content, two minerals that pull the PRAL especially far into negative territory. Fresh spinach (PRAL −12.2) and cooked spinach (PRAL −12.9) are almost even, and cooked spinach is actually a little lower. So it is alkaline both raw and cooked.

Kale has earned its superfood reputation. At PRAL −11.7, it comes in just behind spinach, and its nutrient density is impressive: plenty of potassium, calcium, magnesium and vitamin C. A big practical plus is that kale hardly loses its alkaline character when cooked, which makes it very versatile.

Lamb’s lettuce is one of the most alkaline salad greens in the database and ranks even ahead of arugula. At PRAL −8.3, it is well beyond what most other salad greens reach. It has a mild flavor, is especially affordable in winter, and is an easy way to make your salad base more alkaline without changing the taste much.

Swiss chard is the underrated relative of spinach and belongs to the same plant family. At PRAL −7.8, it is clearly behind kale but ahead of broccoli and carrots. It is rich in potassium, magnesium and calcium. You can almost always find it at the farmers’ market, but in supermarkets it often gets overlooked.

Arugula is one of the top performers among salad greens, yet it is often underrated. At PRAL −7.1, it clearly beats iceberg and romaine and narrowly beats regular lettuce. Its slightly bitter taste comes from plant compounds that also have an anti-inflammatory effect. So an arugula-based salad is not only more flavorful, it also has a much stronger alkaline effect.

Potatoes are often underrated in nutrition debates or even labeled as unhealthy. Yet boiled potatoes, at PRAL −6.5, are clearly alkalizing. Their high potassium content is what gives them a negative PRAL. Preparation hardly matters: boiled and baked potatoes are alkaline, and even French fries are alkaline by PRAL, but they come with a lot of fat and salt.

Fresh fennel reaches PRAL −6.5, which is much more than many people would expect. Its slight anise flavor doesn’t make it everyone’s first choice, but if you like it, you get one of the most alkaline vegetables in the ranking. Fennel is also especially rich in fiber and supports digestion.

The carrot is the everyday vegetable par excellence and makes the ranking at PRAL −6.3. It brings almost as much potassium as the potato, but hardly any protein or phosphorus. Carrots are cheap all year round, keep for a long time in the fridge, and work just as well raw in a lunchbox as in soups and roasted vegetables.

Raw broccoli, at PRAL −6.1, is clearly alkaline and also provides plenty of vitamin C. When boiled, however, it loses a large part of its alkaline effect: boiled broccoli is listed in the database at only PRAL −1.3, because about half of the potassium is lost in the process. So with broccoli, how you prepare it really makes a difference.

Brussels sprouts round out the ranking and are more alkaline than many better-known vegetables such as tomatoes, zucchini or cauliflower. Fresh, they have a PRAL of −5.6, are rich in vitamin C and potassium, and are especially affordable in fall and winter. A typical winter vegetable that deserves more attention in everyday cooking.