Hellmann's Real Mayonnaise Packets, 75 Count

Not while they are sealed. Commercial mayonnaise is acidified with vinegar and concentrated lemon juice, and that acidity is what keeps it stable at room temperature inside an airtight packet. A packet is single use with nothing to reseal, so once it is torn open, squeeze it out and use it.

About twenty. Each packet holds 0.38 oz, roughly 10.6 g, which is a little under a level tablespoon, and a cup is sixteen tablespoons. Ten packets get you close to a half cup. If the amount matters, as it does in a dressing or a baked good, weigh the packets rather than counting them.

Yes, it is Hellmann's Real Mayonnaise in a portion pack rather than a jar, built on the same soybean oil, whole egg and yolk, vinegar and lemon juice. Note that it is the Real version, not the Light version, which Hellmann's packets separately.

Hellmann's gives its single serve mayonnaise packets a 240 day shelf life from production, and each packet is individually sealed. Opening the box does not start a clock on the packets still inside it.

Yes, and the arithmetic is twenty packets to a cup, ten to a half cup. It is the same emulsion, so it thickens, binds and browns identically in potato salad, coleslaw, tuna salad or a mayonnaise cake. The only real cost is tearing open twenty packets.

Portion control and not needing a refrigerator. A sealed packet travels in a lunch bag, sits in a desk drawer or goes out with a catering order, and each one is used once, so nothing gets double dipped or left standing. The trade off is more packaging and a higher cost per ounce than a jar.

That date is about quality rather than safety. What actually happens to old mayonnaise is that the oil oxidises and the emulsion separates, so it tastes flat or faintly painty and looks split. Squeeze a little onto a plate first: if the oil has broken out or it smells sharp, throw it away.

Yes. The 0.38 oz Hellmann's Real Mayonnaise packet is the standard foodservice portion pack, normally bought as a 210 count case. This is the same packet in a 75 count box sized for a household, a break room or a school lunch rotation.