⚕️ General information only — not medical advice. If pregnant or unwell, always follow the guidance of your midwife, GP or NHS 111. Full disclaimer

Dairy

Written by Jordan Morley · Reviewed against NHS, FSA and USDA FoodKeeper guidance · Last updated 28 October 2026

Milk, cream, yoghurt and butter — dates, storage and pregnancy. Below: 48 answers, grouped by the question they answer.

Food-by-food guides

Each guide gathers every answer for one food in one place.

📋Milk: every answer📋Butter: every answer📋Yoghurt: every answer📋Cream: every answer📋Custard: every answer

Pregnancy (7)

🟡Kefir when pregnant?🟢Milk when pregnant?🔴Unpasteurised Milk when pregnant?🟢Ice Cream when pregnant?🟢Yoghurt when pregnant?🟢Custard when pregnant?🟢Butter when pregnant?

Breastfeeding (1)

🟡Raw Milk when breastfeeding?

Fridge and cupboard storage (28)

🧊How long does milk (opened) last?🧊How long does butter last?🧊How long does cheddar (opened) last?🧊How long does parmesan (opened) last?🧊How long does brie (opened) last?🧊How long does mozzarella (opened) last?🧊How long does cream cheese (opened) last?🧊How long does cottage cheese (opened) last?🧊How long does double cream (opened) last?🧊How long does single cream (opened) last?🧊How long does whipping cream last?🧊How long does sour cream (opened) last?🧊How long does yoghurt (opened) last?🧊How long does buttermilk last?🧊How long does grated or shredded parmesan last?🧊How long does grated cheddar or mozzarella last?🧊How long do processed cheese slices last?🧊How long does liquid coffee creamer last?🧊How long does ultra-pasteurised whipping cream last?🧊How long does sweetened whipped cream last?🧊How long does half-and-half cream last?🧊How long do sour cream dips last?🧊How long does kefir (fermented milk) last?🧊How long does margarine last?🧊How long does pudding last?🧊How long does aerosol whipped cream last?🧊How long does aerosol whipped topping last?🧊How long does tub whipped topping last?

Freezing (4)

🟢Can you freeze milk?🟢Can you freeze butter?🟡Can you freeze yoghurt?🟢Can you freeze double cream?

Reheating (1)

🟡Can you reheat custard?

Left out overnight (4)

🔴Milk left out overnight?🟡Butter left out overnight?🔴Yoghurt left out overnight?🔴Cream left out overnight?

Use-by and best-before dates (3)

🔴Milk after its use-by date?🟡Yoghurt after its use-by date?🔴Cream after its use-by date?

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General information only, not medical advice: see the medical disclaimer. Feeling unwell after eating something? Contact NHS 111 or your GP.