I’ve spent more mornings than I can count fiddling with tubs of ragworm, trying to keep them lively and easy to hook when the tide finally turns. Ragworm are brilliant bait — juicy, tough on a hook and irresistible to many shore species — but they don’t stick around in top condition for long if you treat them like ordinary bait. Over the years I’ve settled on a practical way to prep, brine and store ragworm so they keep usable (what I call “hookability”) for up to 72 hours without access to a refrigerator. Below I’ll walk you through my steps, what to watch for and the kit that makes it work when you’re fishing from a bank, a car park or a caravan park without a kitchen fridge.

What I mean by “hookability”

When I say a ragworm is still hookable after 72 hours, I mean it’s still firm enough to thread on a hook without falling apart, still shows enough movement or turgor to look attractive in the water, and hasn’t developed an off smell or visible decay. That’s the practical definition that matters on a cold, windy shore when you need bait that stays on the hook through a long cast and the first few minutes of the drift.

Supplies I always have with me

These are small, inexpensive bits of kit that make the difference between limp, unusable bait and worms that work for a weekend trip.

  • Insulated cool box (small) or thermal tub
  • Reusable cold packs (frozen at home before a trip) or sealed ice blocks — you’re not refrigerating, but keeping things cool works wonders
  • Plastic tubs with tight lids (one for fresh seawater, one for brine)
  • Table salt (non-iodised is fine) and a small spoon or digital scale
  • Seawater or clean water (if collecting seawater, strain through old nylon or a fine sieve)
  • Battery-powered aerator or small aquarium pump (optional but very helpful)
  • Piece of damp seaweed or moist peat for transport (keeps worms moist without drowning)

    • Step-by-step: from shore to brine

    I’ll assume you’ve dug your ragworm or bought them fresh from a bait shop. These steps get them clean, purge the sand and set them up to survive a few days.

  • Initial purge — as soon as you can, rinse the worms in clean seawater to remove surface sand and grit. A gentle shake in a tub of seawater then lift them out carefully.
  • Check for damage — discard any worms that are clearly cut, crushed or slimy. One bad worm can contaminate the whole tub.
  • Storing for the trip home — if you have to carry them a while, place the worms between layers of damp seaweed or on damp kitchen roll in a ventilated container. Avoid fresh water for transport; they’ll absorb it and go mushy.
  • At home or camp — set up two tubs: one with fresh, oxygenated seawater for recovery and one with brine for longer storage (below I give the exact recipe I use).

    • Brine recipe and ratios

    Brining is the key to extending shelf life without refrigeration: it firms the worm tissue, slows bacterial activity and reduces the worm’s need for immediate oxygen. I use a slightly stronger-than-seawater brine — it’s firming but not so harsh it shocks the worms.

    IngredientPer litre
    Clean seawater (or tap water + salt)1 litre
    Table salt50–70 g (≈5–7% w/v)
    Optional: a pinch of sugar1–2 g (helps osmotic balance)

    If you don’t have seawater, dissolve 50–70 g of table salt in 1 litre of clean water. Stir until fully dissolved and let it settle so any grit sinks. Use the lower end (50 g/L) for delicate, already stressed worms; use 70 g/L if you want a firmer result and the worms are healthy.

    How I brine and store

    Once the brine is made, follow these practical steps.

  • Rinse recovery: Give worms a short recovery in clean, oxygenated seawater for 30–60 minutes to flush out grit and let them settle.
  • Transfer to brine: Move the worms gently into the brine tub. Don’t overcrowd — a loose single layer is best so the brine contacts each worm.
  • Keep it dark: Cover the tub and keep it in shade or inside an insulated cool box to limit temperature spikes and light — both speed decay.
  • Use aeration when possible: If you have a small aerator, use it in the recovery tub before brining. Continuous aeration in brine isn’t necessary but occasional oxygen top-ups (swap to fresh brine every 24 hours) help if you’re keeping bait for the full 72 hours.
  • Cold packs: Place cold packs in the insulated box around the brine tub. They aren’t refrigeration, but they keep the environment cool (ideally 6–10°C). Avoid direct contact of ice with the brine container to prevent freezing spots.

    • Handling during the 72 hours

    I check my tubs twice a day. Each check is quick:

  • Look: Any cloudy brine, strong rotten smell, slime or disintegration means discard that batch.
  • Touch: A healthy worm should feel firm and slightly springy. If it’s soft and falls apart, it’s done.
  • Swap brine: Every 24 hours I lift the worms briefly into clean seawater, then replace brine with freshly mixed solution (same concentration). This prevents build-up of waste products and keeps the worms in better condition.

    • How to keep them hook-ready at the peg

    When I head to the peg for an evening session, I pack my bait box like this:

  • Primary tub: the brined worms I intend to use. Keep this in the insulated box with a cold pack.
  • Fresh seawater tub: for quick rinses just before hooking (removes excess brine and firms the worm).
  • Small tray with damp seaweed: for presentation — a worm looks better and stays firmer if handled as little as possible.

    • A quick trick: dip the worm briefly in the fresh seawater immediately before hooking — it perks them up, removes excess salt taste and makes them more pliable for threading onto the hook.

    Signs of failure and food safety

    Even with careful brining, not every worm will make 72 hours. Be strict: if a worm smells sour, putrid or just “off”, don’t use it. If the brine goes cloudy and has a bad smell, empty and sterilise the tubs (boiling water or a diluted bleach solution then thorough rinsing) before reusing. I don’t use chemical preservatives — I keep things simple and food-safe.

    Common questions anglers ask me

    Below are short answers to things I get asked on the shore.

  • Can you keep ragworm alive 72 hours without cold packs? — Possible in cool conditions, but cold packs dramatically increase your success rate. Heat kills them fast.
  • Does brine change the fish catch rate? — A light brine firms the bait and can help with hooking and presentation. Too salty and you may mask natural scent — stick to the 5–7% guideline.
  • Is aeration essential? — Not essential if you change brine daily and keep things cool, but an aerator keeps worms lively longer and reduces mortality.

    • These methods aren’t magic, but they’re what I trust for weekend trips when refrigeration isn’t an option. With a little prep and the right kit you can arrive at the bank with worms that still have life in them and will sit on the hook when it matters.