Tag Archives: safefood ireland

Color sucks: Use a thermometer and stick it in for food safety

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safefood Ireland has joined the UK Food Standards Agency in providing terrible advice about how to cook burgers.

A recipe for summer beef burgers (may a fine solstice greet our Northern and Southern friends) endorsed by safefood says:

“Before serving, ensure that the burgers are cooked thoroughly. Cut into them with a clean knife and check that they are piping hot all the way through, there is no pink meat remaining and that the juices run clear.”

Meanwhile, FSA issued a Safe Summer Food guide as UK picnickers head out in the sun (there’s sun in the UK?). The guidelines were in part based results of a self-reported survey, which is largely meaningless but something FSA likes to do.

The Morning Advertiser has more details on the hoops FSA seems willing to jump through to ensure the safety of rare burgers including:

  • sourcing the meat only from establishments which have specific controls in place to minimise the risk of contamination of meat intended to be eaten raw or lightly cooked;
  • ensuring that the supplier carries out appropriate testing of raw meat to check that their procedures for minimising contamination are working;
  • Strict temperature control to prevent growth of any bugs and appropriate preparation and cooking procedures;
  • notifying their local authority that burgers that aren’t thoroughly cooked are being served by the business; and,
  • providing advice to consumers, for example on menus, regarding the additional risk.

The advice from these self-proclaimed science-based agencies is at odds with, uh, science.

It has been known for over two decades that color is a lousy indicator of safety in hamburger.

The latest addition to this work comes from Djimsa et al. in the Dept. of Animal Science at Oklahoma State Univ., who wrote in the Journal of Food Science earlier this year that:

Premature browning is a condition wherein ground beef exhibits a well-done appearance before reaching the USDA recommended internal cooked meat temperature of 71.1 °C; however, the mechanism is unclear.

The objectives of this study were: (1) to determine the effects of packaging and temperature on metmyoglobin reducing activity (MRA) of cooked ground beef patties and (2) to assess the effects of temperature and pH on thermal stability of NADH-dependent reductase, lactate dehydrogenase (LDH), and oxymyoglobin (OxyMb) in-vitro.

Beef patties (lean: fat = 85:15) were packaged in high-oxygen modified atmosphere (HiOX-MAP) or vacuum (VP) and cooked to either 65 or 71 °C. Internal meat color and MRA of both raw and cooked patties were determined. Purified NADH-dependent reductase and LDH were used to determine the effects of pH and temperature on enzyme activity. MRA of cooked patties was temperature and packaging dependent (P < 0.05). Vacuum packaged patties cooked to 71 °C had greater (P < 0.05) MRA than HiOX-MAP counterparts.

Thermal stability of OxyMb, NADH-dependent reductase, and LDH were different and pH-dependent. LDH was able to generate NADH at 84 °C; whereas NADH-dependent reductase was least stable to heat.

The results suggest that patties have MRA at cooking temperatures, which can influence cooked meat color.

Effects of metmyoglobin reducing activity and thermal stability of NADH-dependent reductase and lactate dehydrogenase on premature browning in ground beef

Journal of Food Science, 2017 Feb, 82(2):304-313, doi: 10.1111/1750-3841.13606. Epub 2017 Jan 18.

https://www.ncbi.nlm.nih.gov/pubmed/28099768

Say it ain’t so: Irish follow Brits on bad turkey advice

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Safefood Ireland asks: Want to know the cooking time for your turkey to ensure the best (and safest) results?

turkey.calculator.dec.15This year it’s quick and simple. Just enter the weight of your turkey in the calculator, and it will calculate the correct cooking time to ensure your turkey is cooked to perfection.

Our calculated turkey cooking times are for use in electric fan assisted ovens only. See below for guidance on cooking turkeys using other oven types.

I’ll spare you the convoluted details.

Whoever thought a calculator with all the variables such as oven temp, time, etc. was simpler than sticking it in has probably never cooked a turkey. With a tip-sensitive digital thermometer.

CurtisStoneAnd of course, the piping-hot-no-pink mantra: “As with cooking any poultry, always double check that the turkey is properly cooked before serving. Your turkey should be piping hot all the way through with no pink meat left and the juices should run clear when the thickest part of the thigh and breast are pierced with a clean fork or skewer.”

Curtis Stone from Coles in Australia gets it sorta right when he says, “Baste the turkey and continue roasting uncovered for about 1 hour longer, basting occasionally with more spice butter, or until a meat thermometer reads 75°C when inserted deep into the breast. If you don’t have a thermometer, insert a clean skewer into the thickest part of the thigh and if the juices run clear the turkey is ready.”

Just stick it in. Three times.

We’re having fish.

barfblog.Stick It In

Use a thermometer: Top food safety tips for BBQs

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How hard can this be: use a thermometer.

barfblog.Stick It InSafefood Ireland, I don’t know when you published this BS, because there’s no date, but it showed up in in my feedly, uh, feed today.

The big issue when barbequing is making sure your food has been cooked thoroughly, all the way through. This is particularly important when cooking poultry, pork, minced and skewered meats, such as burgers, sausages and kebabs on the barbecue – while the outside may look cooked (and in some cases burnt), the inside can still be raw.

We recommend these meats should always be cooked until they are piping hot all the way through, with no pink meat remaining and the juices run clear. If you’ve got lots of people visiting your barbecue and want to ensure that meat is thoroughly cooked, you can pre-cook meat in your kitchen oven just before you put it on the barbeque for flavor.

How to know it’s cooked

When cooking foods on the barbeque, make sure to turn them regularly and move them around the grill to ensure they area cooked evenly on all sides – then remove them from the heat and place them on a clean plate. For meats that need to be cooked all the way through be sure to cut into the centre of them to check that:

They are piping hot all the way through

There is no pink meat left and

The juices run clear

Food safety BS (and taxpayer funded).

Use a tip-sensitive digital thermometer.

Stick it in.