Sesame Beef & Broccoli Stir-Fry

Beef earns its place here twice over. It is one of the best-absorbed zinc sources in the food supply — relevant because a meta-analysis of randomized trials found zinc shortened colds when started early (CMAJ, 2012), though those trials used lozenges at doses no dinner reaches. Beef is also the classic dietary source of creatine, whose supplement literature is unusually solid: the International Society of Sports Nutrition's position stand concluded creatine is safe and effective for strength and lean-mass gains, with growing interest in aging muscle and brain outcomes (Journal of the International Society of Sports Nutrition, 2017). A 200 g portion of steak supplies well under a gram — the studied doses are three to five grams — so file beef under contribution, not protocol.

Broccoli carries glucoraphanin, the precursor that becomes sulforaphane when plant cells are damaged and the enzyme myrosinase gets to work. The founding observation is one of nutrition science's most cited: broccoli — and especially its sprouts — is an exceptionally rich source of inducers of the body's own detoxification enzymes (PNAS, 1997). Most sulforaphane trials since have used extracts, and hard clinical endpoints remain unproven. Ginger is broadly studied at culinary-adjacent doses: a review of 109 randomized trials (Nutrients, 2020) found its most consistent effects on nausea, with modest metabolic signals elsewhere.

Why this works

Flank steak, sliced thin against the grain and seared hard, delivers the zinc and creatine with the least chew. Broccoli goes in hot and fast — brief cooking preserves more myrosinase activity than a long boil, which favors sulforaphane formation, a mechanism worth exploiting even if no stir-fry trial exists. Fresh ginger and garlic bring gingerols and allicin precursors respectively; add the garlic late so it does not scorch. Tamari seasons the sauce, and toasted sesame seeds finish it with crunch plus a little lignan chemistry of their own.

How to make it

1. Slice 450 g flank steak thinly against the grain and toss with 1 tbsp tamari and 1 tsp cornstarch; rest 15 minutes.
2. Stir together the sauce: 2 tbsp tamari, 1 tbsp rice vinegar, 1 tsp honey, 2 tsp grated fresh ginger and 60 ml water.
3. Stir-fry 400 g broccoli florets in a screaming-hot wok with a little oil and a splash of water, 2–3 minutes until bright green and crisp-tender; remove.
4. Sear the beef in a single layer, undisturbed for 1 minute, then toss for 1 minute more.
5. Add 3 sliced garlic cloves for 30 seconds, return the broccoli, pour in the sauce and toss until it clings, about 1 minute.
6. Finish with toasted sesame seeds and sliced scallions.

Serves 3–4 over steamed rice. Everything after the broccoli takes five minutes, so have the sauce mixed before the wok gets hot.

The research behind this recipe

Primary sources for the claims above. Effects reported in these papers describe the compound or the dietary pattern studied — not this specific dish.

More muscle, connective tissue & minerals recipes

Muscle & strength

Creatine from Food: Steak with Chimichurri

Red meat and fish are the only meaningful dietary sources of creatine — roughly a gram per pound of raw meat, and cooking costs…

Collagen & glycine

Glycine-Rich Bone Broth

Gelatin is roughly a third glycine — the amino acid we eat least of relative to how much our connective tissue needs.

Taurine

Taurine-Rich Seared Scallops

Shellfish are the densest food source of taurine — the amino acid whose age-related decline drew serious attention in 2023.

All 106 longevity recipes →

Keep reading

SulforaphaneCreatineSulforaphane: the evidenceCreatine: the evidenceCreatine for Healthy AgingThe supplement guideResearch mapPathway universe