Mom's Mala is a vibrantly red and deeply fragrant Sichuan chili oil that is all about bringing out the aromatic side of chili, balancing mouth-tingling (ma) Sichuan peppercorns with spicy (la) chili peppers. This classic mouth-tingling sauce is a classic condiment much harder to find on supermarket shelves than other Asian hot sauces that feature peanut or garlic. Rounded out with a blend of star anise, cinnamon and cloves—the core spices of Chinese five-spice powder—and a touch of sugar and oil, this Sichuan chili oil has floral and lightly smoky notes and is available in both mild and spicy versions.

This chili sauce is enhanced with preserved black beans, mushroom powder, sesame oil and garlic for a complete flavor profile. The crispy bits of chili, the namesake ingredient of this dish, provide bursts of contrasting texture, making it an ideal tableside topping for stir frys, soups, braises and more.

This all-purpose condiment layers the spicy elements with salty-sweet soy sauce, umami-rich mushroom powder and brown sugar for a robust, well-rounded sauce; you can think of it as a variation of Sichuan chili oil with just as much bold aroma but less heat. Fly by Jing uses regional Sichuan dried chilies and mouth-tingling Sichuan peppercorns for a classic mala profile that defines much of Sichuan cooking.

Villa Jerada’s Harissa No. 1 is our favorite version of this North African red pepper paste for its bright, complex flavor. While many store-bought varieties have a one-dimensional spicy flavor, this harissa layers acidity and fruitiness with preserved lemons, a touch of vinegar and tomato paste for a lively, tangy condiment. Villa Jerada uses just enough high-quality Moroccan olive oil to make the harissa spreadable and smooth without diluting its flavor, as opposed to conventional brands that contain a high proportion of water and vegetable oil.

Unlike supermarket tuna, which can be mealy or soggy, CS Fishery's product is wonderfully dense and flaky—you can tell this is tuna meat. The fresh, mild and meaty fish is packed in olive oil and seasoned with Jacobsen sea salt, made from the same waters from which the fish are caught. This is premium American tuna—with a clear supply chain—at a reasonable price.

Many supermarket tahinis are over-roasted, which gives them an unpleasant, bitter flavor. They are also too thick and hard to stir into a creamy blend. Soom's tahini has a full, nutty flavor as well as a pourable and well-balanced texture, made from single-origin white sesame seeds from northwestern Ethiopia that have an ideal oil-to-protein ratio.

Casablanca Market's preserved lemons have a bright, balanced flavor and they aren't overly salty or bitter like some brands. We like that they add a bold, piquant kick to dishes without being too sour, and their tender texture is perfect for chopping finely and incorporating into recipes.

Similar to red wine vinegar but slightly less sharp, Mutti's Tomato Vinegar has a sweet-savory balance and smooth quality reminiscent of balsamic, with an intense sun-dried tomato aroma. It's not too acidic but rather balanced by caramelized sweetness and an earthy umami depth. This complex vinegar enhances raw tomato recipes and can be used in simple applications. We like to drizzle some on caprese salads or toss it in pasta salad, with feta or goat cheese as a creamy counterpoint.

Most ketchup is watered-down and overly sweet from corn syrup. Not so with Mutti's product, which has a full tomato taste because it's made from concentrated tomato paste instead of puree. The ketchup also has a wonderful balance of flavors: robust and savory with a touch of spice. We like that Mutti makes this condiment with wine vinegar, which adds dimension and offsets tomatoes' ripe sweetness.

Mutti Tomato Paste is tomato paste as it was originally intended. Traditionally, this ingredient was made by drying tomato sauce on wooden boards in the sun; likewise, Mutti's modern version has a sun-dried flavor and caramelized richness reminiscent of molasses. Yet the tomato paste is not overly sweet—as tomatoes cook, their amino acids break down, which produces savory umami compounds. And unlike most tubed tomato pastes which are double-concentrated, this version is triple-concentrated, so a little goes a long way. We far prefer it to other tomato pastes in tubes, not to mention canned varieties that inevitably have a metallic taste from reacting with acidic tomato juice.

This small-batch vanilla extract from Kansas-based Vain Vanilla is prepared completely by hand using only the best ingredients. The Original Baker's Blend is made with top-shelf rum that emphasizes vanilla's sweet characteristics and adds its own cane-sugar dimension. We especially love that Vain Vanilla leaves its vanilla pods in the bottle, which has two benefits. First, over time the extract will continue to deepen in color and become more complex as the pods release more flavor compounds. Second, when you're done with the vanilla extract, you can still slice open the pods and use the beans themselves in your desserts.

Stone-milled exclusively from a single grove of small, slender Souri olives grown in North Lebanon, Maalouf's early-harvest oil possesses a potent green color and a buttery, rich flavor with hints of green apple and artichoke. It has a subtle peppery kick and addictively long, nutty finish. This is truly an all-purpose, extra-virgin olive oil without the overpowering bitterness that mars many other brands. We have a very limited inventory of this small-batch oil; once we're sold out, we can't get more until next year's olive harvest.

Il Colle del Gusto's hazelnut spreads are lighter, glossier and more aromatic versions of Nutella. With a high hazelnut content of up to 42%, they are made using local, high-quality roasted nuts from Italy, which have a toasty, buttery flavor, light sweetness and earthy depth.

Made from Sicilian pistachios and extra-virgin olive oil, Pistacchiosa is a creamy, aromatic spread you will want to put on all your desserts and, yes, eat straight out of the jar.

This style of jarred tomato is a specialty of the Basilicata region. Perfectly ripe heirloom tomatoes are cut in half, with their pulp removed and skins left on. Masseria Mirogallo pasteurizes them for as little time as possible and adds no other ingredients—not even water or salt—so the final product has as much flavor as a fresh tomato and can be used similarly. They are ready to add to sauces, soups and relishes, or add them chopped to crostini and bruschetta with crumbled goat cheese or sliced smoked mozzarella, a few torn basil leaves and a drizzle of extra-virgin olive oil. Make sure to save the liquid from the jar for an easy gazpacho or even a Bloody Mary.

Produced by the Belfiore family in the province of Matera (one of Italy’s oldest towns), these hand-peeled tomatoes are stunningly packaged and taste terrific—sweet, fruity, bright and bold.

It’s no secret that we love chilies at Milk Street, and the diavolicchi from Masseria Mirogallo are some of our favorites. Their name comes from the Italian word for devil because they are said to be hotter than hell, but they also have a bright flavor and sweet finish. Hand-selected and packed into jars with only wine vinegar and extra-virgin olive oil produced from the same farm on which the peppers were grown, diavolicchi's piquancy will define and sharpen a dish’s flavors. Use to cut through a starchy pasta dish, clarify a rich braise or stew or heighten sauces. And don’t throw out the oil! It’s terrific in vinaigrettes or used for sautéing vegetables, seafood and eggs.

You will only find this variety of Peperone di Senise, a local sweet pepper from Basilicata, from Masseria Mirogallo. The Belfiore family has cultivated its heirloom variety from over 20 years of selection, and it is prized particularly for its thin, crunchy skin that adds texture to the pepper compote. Red and green peppers are cored, seeded and chopped by hand; once pressed and dried, the peppers are packed with parsley, fennel and olive oil from the Mirogallo farm. These aromatic sweet peppers are terrific tossed with sautéed shrimp or scallops, or blended with a handful of chopped baby arugula, extra-virgin olive oil and lemon juice to taste and used as a relish for salmon or chicken. Toss with chopped tomatoes for an instant bruschetta topping, or stir a couple of chopped tablespoons into quick pasta sauces.