Favorite kitchen hacks for leftovers from frozen ‘herb bombs’ to risotto ‘pancakes’ and Persian tahdig

September 23, 2020
Persian tahdig dish on the table.
Making Persian tahdig is a way to use up leftover starchy foods, for example, macaroni and cheese. Photo by Bill St. John

More often than not, I grocery shop with my close friend Chagrin, who just talks incessantly.

Rolling my cart down the aisles, all I hear in my head are Chagrin’s belly-aching questions.

“Why would anyone cook mac’ and cheese for just one?” “All I’ve got to make are croutons for that Caesar salad, so does that mean I’ll just waste the rest of this loaf?” “Whoever actually uses an entire bunch of parsley?”

Chagrin also follows me home and blabs whenever I’m at work in the kitchen. Evidently, she doesn’t like to waste.

“OK, there you see it. Enough boiled pasta to feed the third grade.” “Well, what have we here? That finger of ginger has more wrinkles than the Dos Equis guy. Are those sprouts coming out of that garlic bulb?”

Et. Cetera.

So, I’ve taught myself to take Chagrin’s nags and spin them into something useful. Culinary jiu-jitsu, if you will.

Here are two hacks that might profitably utilize your own kitchen excess.

Whenever I note the close-to-corpse remainders from a bunch of parsley in the refrigerator’s vegetable bin, or Chagrin’s gnarly knob of ginger or sprouting head of garlic, I make “herb bombs,” small frozen, concentrated pieces of minced herbs (sometimes with ginger).

favorite kitchen hacks include making "herb bombs" with leftover herbs. Freeze them with olive oil.
Keep some frozen “herb bombs” on hand to lend lots of flavor to lots of foods. Photo by Bill St. John.

These you can use to finish a pan sauce for a steak; enrich the end of a stir-fry; lay down an exclamation point in a bowl of soup; up the ante on a fried rice; coat the pasta noodles with something extra — you get the idea.

Add a small handful of blanched parsley leaves (and some hanging-around spinach leaves if you have them) — blanching is key — with a couple cloves of garlic and a 1/2-inch-square of peeled, chopped ginger to a food processor. Pulse and process, binding the pulp with an extra virgin olive oil (not water; EVOO holds together all the flavors better in the freezer).

You don’t want a too-aggressive oil here, just one that has great undernotes of fruit flavor such as a Ligurian or Provencal oil, or something from the mild, buttery arbequina olive of Spain.

Freeze the paste into cubes or, better, splay flat in a sturdy plastic zipper bag. Crack out a smidge whenever you’re after the bomb.

More great recipes and tips from Bill St. John.

Another favorite kitchen hack of mine is to take next-day leftover risotto and fry it up into a crisp pancake, sort of a flat arancini ball. The Italians call the pancake “risotto al salto” and it loosely translates that “the risotto jumps into your mouth.” Nice.

Iranian cooks do much the same with next-day leftover pasta preparations; they fry it in clarified butter and olive oil and call the crisp pancake a “tahdig.” What the skillet does is add a huge additional flavor, that of a crisp skin, the brown of a pecan shell, to both sides of the pancake. Let’s say you have some leftover mac ‘n’ cheese (or any leftover rice, cornmeal, or other pasta dish). Make a tahdig out of it.

Persian tahdig

Makes 1

Persian tahdig in a pan on the stove.
Persian tahdig is a great way to use up leftovers. Photo by Bill St. John.


3 tablespoons olive oil (or a mix of clarified butter and olive oil)

2-3 cups leftover macaroni and cheese (or other starchy leftover such as rice pilaf or risotto)

Additional olive oil if necessary

Chopped flat-leaf parsley

Freshly ground black pepper and salt, to taste


Heat a 10-inch nonstick skillet over medium-high heat, add the olive oil (or the mix of clarified butter and oil). Slip in whatever leftover mac ’n’ cheese you’re now going to turn into utter scrumptiousness, and pat it down with a silicone spatula into a flat pancake.

Once it starts sizzling, let it fry for a good 15 minutes over medium-low heat, frequently tucking in the edge all around with the spatula, turning the skillet a quarter turn every few minutes to even out the heat, and jostling the skillet to keep the Persian tahdig loose in the skillet.

You’ll hear the Persian tahdig scratch somewhat when the first side is browned enough. Slip the tahdig out of the skillet onto a large flat cookie sheet, or pizza peel or pan, and lightly wipe out the skillet with paper toweling. Place the open side of the skillet over the “raw” side of the tahdig and carefully flip everything over so that the tahdig can now crisp on its second side.

You’ll probably need to slip a little more olive oil down into the skillet and under the Persian tahdig (but, depending on the style of mac ’n’ cheese preparation, perhaps not). When the tahdig is finished cooking and nicely colored, cut it as you wish to serve it, and top with chopped flat-leaf parsley and a solid grinding of black pepper and salt, to taste.

You may reach Bill St John at [email protected]

About the author

For more than 40 years, Bill St. John’s specialties have been as varied as they are cultured. He writes and teaches about restaurants, wine, food & wine, the history of the cuisines of several countries (France, Italy, Spain, Belgium, and the USA), about religion and its nexus with food, culture, history, or philosophy, and on books, travel, food writing, op-ed, and language.

Bill has lent (and lends) his subject matter expertise to such outlets as The Rocky Mountain News, The Denver Post, The Chicago Tribune, 5280 Magazine, and for various entities such as food markets, wine shops, schools & hospitals, and, for its brief life, Microsoft’s sidewalk.com. In 2001 he was nominated for a James Beard Award in Journalism for his 12 years of writing for Wine & Spirits Magazine.

Bill's experience also includes teaching at Regis University and the University of Chicago and in classrooms of his own devising; working as on-air talent with Denver's KCNC-TV, where he scripted and presented a travel & lifestyle program called "Wine at 45"; a one-week stint as a Trappist monk; and offering his shoulder as a headrest for Julia Child for 20 minutes.

Bill has also visited 54 countries, 42 of the United States, and all 10 Canadian provinces.