What Is Pho Made Of?

Pho is made of four core components: a clear broth simmered for hours from beef or chicken bones with charred onion and ginger and a spice sachet of star anise, cinnamon, clove, coriander seed, and fennel seed; flat rice noodles called banh pho; thinly sliced meat; and a fresh garnish plate of Thai basil, bean sprouts, lime, and chili that the diner adds at the table. Nothing about a good bowl of pho is complicated in concept — it's a handful of humble ingredients — but the broth takes real time to get right, which is the part most home cooks and mediocre restaurants skip.

I've made pho broth from scratch more times than I can count, and I've also eaten my way through enough bad versions to know exactly where corners get cut. The good news is that once you know what's supposed to be in the pot, it's easy to tell a serious kitchen from one using a bouillon shortcut.

The broth: the part that actually matters

Traditional pho broth (nuoc dung) starts with beef bones — usually a mix of marrow bones, knuckle bones, and oxtail — simmered for 6 to 12 hours. Before they go in the pot, the bones are typically parboiled and rinsed to remove impurities, which is why a well-made pho broth is clear rather than cloudy. Cloudy broth almost always means that step got skipped.

The aromatics are non-negotiable: onion and a knob of ginger, charred directly over a flame or under a broiler until blackened on the outside, then added to the pot. The char is what gives pho its distinctive smoky-sweet backbone — it's not optional flavoring, it's structural.

The spice sachet is the other signature element: star anise, cinnamon stick, whole cloves, coriander seed, and fennel seed, sometimes with black cardamom. These get toasted dry in a pan first to bloom their oils, then simmered in a cheesecloth bag so the broth stays clear instead of getting muddy with spice sediment. Fish sauce and rock sugar round out the seasoning at the end — fish sauce for savory depth, sugar to balance the acidity and salt.

The noodles: banh pho

Pho noodles are flat rice noodles made from rice flour and water, sold fresh or dried and rehydrated in hot water before serving. They come in a few widths — the noodle used in pho is usually a medium-flat cut, wider than the noodles in a stir-fried dish like pad thai but not as wide as the noodles in Cambodian or some Chinese soup dishes. Rice noodles are naturally gluten-free, though cross-contamination and sauces added later (hoisin often contains wheat) can complicate that for anyone with celiac disease.

The meat

Pho bo (beef pho) is built around several possible cuts, and a "dac biet" or special bowl typically includes a few of them together:

• Tai — thinly sliced raw beef that finishes cooking in the hot broth right at your table
• Chin — well-done brisket, simmered until tender
• Nam — flank
• Gau — fatty brisket
• Gan — tendon
• Sach — tripe

Pho ga (chicken pho) swaps in poached, shredded chicken and a lighter chicken-bone broth, usually with fewer of the deep warm spices since chicken doesn't need as much aromatic weight to stand up to.

The garnish plate

What arrives on the side is not decoration — it's meant to be added gradually, and it changes the bowl as you eat it. The standard plate includes Thai basil, bean sprouts, lime wedges, and sliced Thai chili, sometimes with sawtooth herb (ngo gai) or cilantro. Add the herbs a little at a time; they wilt fast, and the lime shifts the whole acidity balance of the broth. Squeeze too much in at once and there's no getting that balance back.

How pho compares to ramen

If you're coming to pho from ramen, the biggest structural difference is the noodle and the broth-building technique. Ramen uses wheat noodles treated with kansui, an alkaline mineral water that gives them their springy bite and yellow tint — nothing like rice noodles. Ramen broths also lean on a separately-made concentrated seasoning base called tare, whereas pho broth is seasoned directly with fish sauce and rock sugar as it simmers. If you want the full comparison, see what is the difference between pho and ramen.

What to look for in a good bowl

When I'm judging a restaurant's pho, I look at the broth before I taste anything: it should be clear and glossy, with visible fat droplets on the surface rather than a uniform greasy sheen. It should smell aromatic — star anise and charred onion — before it tastes of anything. If the broth is cloudy, flat-smelling, or tastes primarily of salt, that's a bouillon-cube shortcut, not a real 8-hour simmer. Check hours and amenities before you go on our pho restaurant map — every listing includes what we could verify from the restaurant's own business profile.

Explore the rest of the series: What Is Pho Made Of?, Is Pho Healthy?, Are Pho and Ramen the Same?, What Is the Difference Between Pho and Ramen?, Is Pho Better Than Ramen?, Is Ramen Better Than Pho?, and What Is the Spiciest Pho in the World? Or find a bowl near you on our pho search map.