Steak Doneness Explained: A Singapore Guide to Getting It Right

The internal temperature reference

Steak doneness is measured by the internal temperature at the thickest part of the steak, taken with a meat thermometer probe inserted into the centre. Every doneness level corresponds to a specific temperature range — these are not opinions, they are physical changes in the muscle proteins as they cook.

Pull the steak from heat 3–5°C below your target temperature. Carryover cooking — heat continuing to migrate from the outside of the steak to the centre during the rest — raises the internal temperature by that amount in the next 5 minutes.

The full doneness chart

Doneness	Internal temp	Centre appearance	When it works
Blue rare	45–47°C	Cool red centre, barely warm	Searing only — under 90 seconds total
Rare	49–52°C	Cool to warm red centre	Thin red band throughout
Medium rare	54–57°C	Warm pink-red centre	The benchmark for most steaks
Medium	60–63°C	Warm pink centre	Pink band reducing
Medium well	65–68°C	Slight pink centre	Mostly cooked through
Well done	71°C+	No pink, fully grey-brown	Generally not recommended for premium cuts

 

What's actually happening at each temperature

The reason doneness levels are not just personal preference is that specific physical changes happen at specific temperatures inside the meat. Understanding this makes it easier to choose the right doneness for each cut.

•       Below 40°C: The meat is essentially raw. Proteins have not yet denatured.

•       40–50°C: Myoglobin (the protein that gives raw beef its red colour) begins to denature. The colour starts to shift from bright red to brownish pink.

•       50–55°C: Collagen begins to contract, slowly squeezing moisture out of the muscle fibres. This is the medium-rare zone — the contraction is minimal, so the steak stays juicy.

•       55–65°C: Collagen contraction accelerates. The steak loses more moisture. Texture becomes firmer.

•       65–70°C: Significant moisture loss. The steak becomes noticeably drier. Past 70°C, even fatty cuts struggle to retain juiciness.

•       Above 70°C: Almost all of the steak's free water has been expressed. The meat is grey, tough, and dry. This is why premium cuts cooked well-done feel like a waste — you've spent for marbling and tenderness that no longer exist after cooking.

 

Which cut wants which doneness

Cuts that shine at medium-rare (54–57°C)

These cuts have enough marbling or tenderness that they're best cooked just past raw, where moisture is maximum and texture is most tender.

•       Ribeye (any grade)

•       Striploin / New York strip

•       Tenderloin / filet mignon

•       Tomahawk

•       Picanha

•       Wagyu (any grade — especially the higher BMS scores)

Cuts that benefit from medium (60–63°C)

These cuts have more connective tissue that needs slightly higher temperatures to soften, or fat that needs more time to render.

•       Hanger steak

•       Flat iron

•       Skirt steak

•       Flank steak (still slice thin against the grain)

•       Tri-tip

Cuts that should be cooked well-done

Yes, there are some — but they are not premium steak cuts. They are:

•       Ground beef / minced meat (food safety requires 71°C internal)

•       Boneless chuck and brisket cooked low-and-slow to 90°C+ for collagen breakdown — but this is braising, not steak-cooking

•       Pregnant women, immunocompromised people, and young children should follow food safety guidance for fully cooked beef

The two ways to actually measure doneness

Instant-read thermometer (the only reliable way)

An instant-read digital thermometer costs SGD$30–80. It pays for itself the first time it saves a piece of Wagyu. Insert the probe horizontally into the side of the steak so the tip sits at the geometric centre — not the bottom touching the pan, not the top exposed to air. Read the temperature, pull when you're 3–5°C below target.

This is non-negotiable for Wagyu and high-grade cuts. The window between medium-rare and overcooked is sometimes as small as 60 seconds.

Touch test (for emergencies only)

The classic chef's trick: press the fleshy base of your thumb when your hand is relaxed, then progressively touch your thumb to each fingertip. Each finger position corresponds roughly to a doneness firmness:

•       Open hand (relaxed): rare

•       Thumb to index finger: medium rare

•       Thumb to middle finger: medium

•       Thumb to ring finger: medium well

•       Thumb to pinkie: well done

This works for thin steaks (under 2cm) cooked by experienced cooks. For thick cuts or expensive meat, use a thermometer.

Why resting matters as much as cooking

When you pull a steak from heat, the outer layers are significantly hotter than the centre. Heat continues to migrate inward during the rest, raising the internal temperature by 3–5°C and equalising temperature across the steak. Resting also allows muscle fibres that contracted during cooking to relax and reabsorb expelled moisture.

Rest times by cut:

•       Thin steaks (under 2cm): 3–5 minutes

•       Standard steaks (2–3cm): 5–8 minutes

•       Thick cuts (3cm+): 8–10 minutes

•       Whole roasts: 15–20 minutes

•       Wagyu: 3–4 minutes only — Wagyu fat solidifies quickly when cold

Rest loosely tented with foil, not tightly wrapped. Tight foil traps steam and continues cooking the steak.

Common doneness mistakes in Singapore home kitchens

•       Cutting into the steak to check colour. Releases the juices you spent the cook trying to retain. Use a thermometer.

•       Trusting cook time over temperature. Every stove, every pan, every air fryer, every steak is different. Temperature is the only constant.

•       Not accounting for carryover. If you cook to 57°C and rest, you'll finish at 60–62°C — medium, not medium-rare.

•       Asking guests how they want their steak before buying the cut. If someone wants their tomahawk well-done, save your money and buy them a sirloin.

Frequently asked questions

Is medium-rare safe to eat?

Yes, for whole-muscle beef from a reputable source. Bacteria on raw beef live on the surface, and surface temperatures during searing easily exceed the safety threshold of 71°C even when the centre is at 54°C. This safety logic does not apply to ground beef, which has surface bacteria distributed throughout — minced meat must reach 71°C internal.

Why is my steak still bleeding red liquid even when cooked to medium?

That red liquid is not blood — it's myoglobin, the protein that stores oxygen in muscle cells. Blood is drained at slaughter. Myoglobin remains and is what colours the meat red. It is harmless and edible.

Can I trust the colour of the cooked steak?

Only partially. Pink doesn't always mean undercooked — some breeds, age groups, and cooking methods produce a pink hue even when the steak is fully cooked. Brown doesn't always mean well-done — high-heat searing can brown the surface before the centre reaches medium. Temperature is the only reliable indicator.

What temperature should Wagyu be cooked to?

49–54°C internal (rare to medium-rare). Wagyu past medium loses its defining quality — see our full Wagyu cooking guide for details.

 

Internal Learning Hub

• How to Cook Wagyu Steak at Home
• Best Steak for Air Fryer
• Best Beef Steak Cuts Explained