Fresh tom yum aromatics on cream linen — lemongrass stalks, kaffir lime leaves, red bird's-eye chillies, sliced galangal and halved limes beside a brass bowl of chilli paste.

What is Tom Yum, Really? A Crash Course in Thailand's Loudest Flavour

Ask anyone who's been to Thailand what flavour they remember, and odds are it's tom yum. It's the country's most famous export after beaches — a hot-and-sour soup so beloved that Thailand turned it into instant noodles, potato chips, and yes, crispy shrimp chin snacks.

So what's actually in it?

Tom yum is a balancing act between four flavours: heat from bird's-eye chilli, sour from lime and lemongrass, aromatics from galangal and kaffir lime leaf, and a savoury backbone that usually comes from shrimp. The name literally describes the method — tom (to boil) and yum (a spicy-sour salad family). Nothing about it is subtle, and that's the point.

Why it works as a snack

Great snack flavours need contrast, and tom yum is nothing but contrast. On a crispy salmon skin or a fried oyster mushroom, the sourness cuts through the richness while the chilli keeps you reaching back into the pack. It zings more than it burns — we grade most of our tom yum range at heat level 2 of 3.

Where to start

If you're tom yum-curious, start with the Sang Sook Crispy Oyster Mushroom, Tom Yum — vegetarian, crunchy, and the gentlest introduction. Ready for the real thing? The Oyua Shrimp Chin, Tom Yum is the version Thailand actually eats: intensely savoury, properly zingy, dangerously finishable.

Want it across four different crunches at once? The Tom Yum Tour combo runs the flavour through salmon skin, chicken skin, shrimp chin and oyster mushroom.

Browse the whole tangy collection — every pack is graded for heat, honestly.

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Frequently Asked Questions

  • What is tom yum?

    Tom yum is Thailand's signature hot-and-sour flavour, named after the soup. It is built on four aromatics: lemongrass, kaffir lime leaf, galangal and chilli, usually with fish sauce for depth. The result is simultaneously citrusy, herbal, savoury and mildly hot — sourness leads, heat follows. As a snack seasoning it reads closer to a tangy masala than a straight chilli powder.

  • Is tom yum very spicy?

    Not usually. Tom yum's dominant note is sourness from lime and lemongrass, not heat. On PLB's 0-3 chilli scale most tom yum snacks sit at 1-2, which an Indian palate accustomed to everyday home cooking will find comfortable. The sensation is bright and aromatic rather than burning.

  • What does tom yum taste like on a snack?

    Sharp citrus first, then a herbal lemongrass-and-galangal middle, finishing savoury with a gentle chilli warmth. On crispy salmon skin or shrimp chin the seafood base adds a rounded umami underneath, which is why tom yum works better on seafood snacks than on plain potato crisps.

  • Which PLB snacks come in tom yum flavour?

    OYUA Salmon Skin in Tom Yum, OYUA Shrimp Chin in Tom Yum, OYUA Crispy Chicken Skin in Tom Yum, and Sang Sook Crispy Fried Oyster Mushroom in Tom Yum, which is the vegetarian option. There is also a Tom Yum Tour combo that gathers the flavour across formats.

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