Keto Herring Dill Cream Cheese Rolls
Herring is one of the most sodium-rich fish in Northern European cooking – marinated pickled herring contains roughly 1.8–2.2 g of salt per 100 g, depending on the recipe. Combined with cream cheese as a source of fat and potassium and a generous amount of fresh dill, you get a keto-friendly take on the classic rollmops that delivers sodium, omega-3 and potassium in a single serving.
Key points at a glance
- Ready in about 12 minutes – a keto-friendly rollmops alternative with no added sugar.
- Approx. 3 g net carbs and 17 g fat per serving (3 rolls).
- Ingredients: pickled herring fillets, cream cheese, fresh dill, cucumber, red onion.
- A good fit for anyone on keto who wants to top up sodium and omega-3 through traditional fish dishes.
Ingredients
3 rolls per person as a snack, appetizer or part of a charcuterie board.
| Amount | Ingredient | Note | ||
|---|---|---|---|---|
| Pickled herring fillets | approx. 180 g, ideally without added sugar | |||
| approx. 180 g, ideally without added sugar | ||||
| Double-cream cream cheese | room temperature; or full-fat cream cheese | |||
| room temperature; or full-fat cream cheese | ||||
| Fresh dill | 2 tbsp, finely chopped | |||
| 2 tbsp, finely chopped | ||||
| Cucumber | cut into thin lengthwise strips | |||
| cut into thin lengthwise strips | ||||
| Red onion | cut into very fine rings | |||
| cut into very fine rings | ||||
| Lemon juice | approx. 1 tbsp | |||
| approx. 1 tbsp | ||||
| Pepper | - | |||
Preparation
Stir cream cheese together with dill and lemon juice, spread it onto the herring fillets, top with cucumber strips, roll up tightly and secure with toothpicks.
Why is herring so valuable for electrolyte balance on keto?
Herring – whether fresh, smoked or marinated – is one of the richest fish in omega-3: roughly 1.5–2 g of EPA/DHA per 100 g. Marinated pickled herring also delivers around 900–1,100 mg of sodium per 100 g thanks to the brine, which makes it a low-effort sodium source on keto. Classic rollmops contains sugar in the brine – this keto-friendly roll-up version skips the sugar and leans on the creaminess of the cream cheese for balance.
Source: USDA FoodData Central – Fish, herring, Atlantic, raw
Omega-3 and electrolytes: why they belong together on keto
Omega-3 fatty acids (EPA/DHA) help stabilize heart rhythm, which can be disrupted by electrolyte shortfalls – particularly low magnesium. That is why herring combines two resources that often run short on keto in one food: sodium from the brine and omega-3 from the fish itself. DHA also has anti-inflammatory effects and supports cognition.
Choosing pickled herring: what to look for on keto
Classic supermarket pickled herring often contains 3–5 g of sugar from the brine. Better options for keto include pickled herring from a fishmonger or vacuum packs without added sugar. Alternatively, lightly salted matjes herring (barely any carbs) or smoked herring (bloater), which is also very low in carbs and intensely flavored.
How do I serve and vary the keto herring rolls?
From personal experience, the rolls are just as good straight from the fridge as they are freshly made. They work as a snack, an appetizer, or as part of a keto charcuterie board with olives, capers and cheese.
Meal prep: making the rolls ahead
Cover the finished rolls airtight and keep them in the fridge for up to 2 days. The cream cheese filling holds its shape well when the rolls are wound tightly. Let them sit at room temperature for a few minutes before serving – straight from the fridge they are quite firm.
Variation: with matjes herring and horseradish
Matjes herring has a milder, less acidic flavor than pickled herring. Stir 1 tsp of freshly grated horseradish into the cream cheese for a sharper, peppery edge. Horseradish is almost carb-free and brings glucosinolates with antioxidant activity.
Which tips make these keto herring rolls even better?
- Pat the pickled herring dry before spreading on the cream cheese – moisture loosens the filling.
- Take the cream cheese out of the fridge at least 30 minutes ahead – it spreads much more smoothly.
- Slice the cucumber very thin (a mandoline helps) – the rolls then close cleanly.
- Press firmly and evenly while rolling, then secure with toothpicks.
- Stir the fresh dill into the cream cheese first and let it rest briefly – this intensifies the aroma.
Nutrition values
| Nutrient | Per 100 g | Per serving | Keto rating |
|---|---|---|---|
| Calories | approx. 155 kcal | approx. 220 kcal | Moderate. A complete bite as a snack or appetizer. |
| Moderate. A complete bite as a snack or appetizer. | |||
| Fat | approx. 12 g | approx. 17 g | Good for keto. Herring and cream cheese supply the fat. |
| Good for keto. Herring and cream cheese supply the fat. | |||
| Net carbs | approx. 2.1 g | approx. 3 g | Excellent for keto. Main sources: cucumber and onion. |
| Excellent for keto. Main sources: cucumber and onion. | |||
| Sugar | approx. 1.4 g | approx. 2 g | Low. From the marinade – choose low-sugar herring. |
| Low. From the marinade – choose low-sugar herring. | |||
| Protein | approx. 9.2 g | approx. 13 g | Good. Herring is high in protein. |
| Good. Herring is high in protein. | |||
| Salt | approx. 1.5 g | approx. 2.1 g | High. Intentional on keto – herring is the sodium source. |
| High. Intentional on keto – herring is the sodium source. | |||
Note: Nutrition values are estimated averages per 100 g and per serving and may vary depending on ingredients, brands, portion size, and preparation. They do not replace individual nutrition or medical advice.
FAQ
Does pickled herring contain too much sugar for keto?
It depends on the brand. Supermarket pickled herring often carries 3–5 g of sugar in the brine. For keto, it makes sense to pick unsweetened versions or to use matjes herring (barely any carbs, mild flavor). Fishmongers often stock variants without added sugar.
Is herring a good source of omega-3?
Yes – herring is one of the richest fish in omega-3, with roughly 1.5–2 g of EPA/DHA per 100 g, comparable to salmon. EPA and DHA are the bioactive forms of omega-3 that the body can use directly, in contrast to plant-based ALA from flaxseed.
Can I freeze herring?
Fresh herring freezes well (up to 3 months). Marinated or salted herring should not be frozen – the texture suffers badly. The finished rolls should also not be frozen, since cream cheese turns watery once thawed.
Which other keto fish recipes fit the electrolyte angle?
Sardines (high in sodium, omega-3 and calcium from the bones) are similarly valuable. Mackerel (omega-3, potassium) and anchovies (very sodium-rich thanks to the cure) also work well for electrolytes on keto.