Mackerel and Sauerkraut Open Sandwich

This open sandwich is an effortless weekday lunch. Mackerel is rich in omega-3 fatty acids to support heart and brain health, as well as vitamin D and...This open sandwich is an effortless weekday lunch. Mackerel is rich in omega-3 fatty acids to support heart and brain health, as well as vitamin D and high-quality protein. The sauerkraut adds a tangy crunch along with beneficial live cultures to support gut health. Serving it on rye bread provides slow-release carbohydrates and fibre to help keep you satisfied. Finish with herbs, lemon, capers and slices of radish for extra crunch. Read more This open sandwich is an effortless weekday lunch. Mackerel is rich in omega-3 fatty acids to support heart and brain health, as well as vitamin D and high-quality protein. The sauerkraut adds a tangy crunch along with beneficial live cultures to support gut health. Serving it on rye bread provides slow-release carbohydrates and fibre to help keep you satisfied. Finish with herbs, lemon, capers and slices of radish for extra crunch. This open sandwich is an effortless weekday lunch. Mackerel is rich in omega-3 fatty acids to support heart and brain health, as well as vitamin D and high-quality protein. The sauerkraut adds a tangy crunch along with beneficial live cultures to support gut health. Serving it on rye bread provides slow-release carbohydrates and fibre to help keep you satisfied. Finish with herbs, lemon, capers and slices of radish for extra crunch.

Prep time
5 mins
Cook time
0 mins
FREEZER FRIENDLY
No
SHELF LIFE
3 days
Why is this healthy?
High
protein
Healthy
fats
Herbs &
spices
Contains
Dairy, Fish, Gluten
Why is this healthy?
High
protein
Healthy
fats
Herbs &
spices

NUTRITION PER SERVING (Read more)

34g
Protein
297kcal
Calories
10g
Total Fat
17g
Carbs
2g
Sugars
3g
Fibre
366mg
Calcium
28%
 
4mg
Iron
22%
 
68mg
Magnesium
16%
 
393mg
Potassium
8%
 
931mg
Sodium
40%
 
0mg
Vitamin B1
0%
8.7mcg
Vitamin B12
363%
 
9.1mcg
Vitamin D
46%
 
1.6mg
Vitamin E
11%
 
51mcg
Vitamin B9
13%
 
230mcg
Vitamin A
26%
 
11mg
Vitamin C
12%
 
1.9mg
Zinc
17%
 
4mcg
Vitamin K
3%
 
0.3mg
Copper
33%
 
0.4mg
Vitamin B2
31%
 
9.2mg
Vitamin B3
58%
 
0.3mg
Vitamin B6
18%
 
443mg
Phosphorus
35%
 
Protein: 34g; Calories: 297kcal; Total Fat: 10g; Carbs: 17g; Sugars: 2g; Fibre: 3g; Calcium: 366mg (28%); Iron: 4mg (22%); Magnesium: 68mg (16%); Potassium: 393mg (8%); Sodium: 931mg (40%); Vitamin B1: 0mg (0%); Vitamin B12: 8.7mcg (363%); Vitamin D: 9.1mcg (46%); Vitamin E: 1.6mg (11%); Vitamin B9: 51mcg (13%); Vitamin A: 230mcg (26%); Vitamin C: 11mg (12%); Zinc: 1.9mg (17%); Vitamin K: 4mcg (3%); Copper: 0.3mg (33%); Vitamin B2: 0.4mg (31%); Vitamin B3: 9.2mg (58%); Vitamin B6: 0.3mg (18%); Phosphorus: 443mg (35%)
Show more
Why is this healthy?
High
protein
Healthy
fats
Herbs &
spices
Contains
Dairy, Fish, Gluten

Ingredients

Serves 1
mackerel (canned)
Swaps: sardines in oil, sardines in water
in olive oil, brine or water
Swaps: yoghurt (plantbased)
capers
sauerkraut
roughly chopped
dill
chopped (plus extra for garnish)
Swaps: gluten free bread, sourdough bread, wholemeal bread
toasted
juiced (to serve)
finely sliced (optional, for garnish)
Cook easy, healthy recipes every week
1000s of quick, balanced and delicious recipes

Method

1

Gather and prepare your ingredients.

2

In a bowl, use a fork to mash together the mackerel and yoghurt. Stir through the capers, sauerkraut and dill. Season to taste.

Cook easy, healthy recipes every week
  • 1000+ doctor approved recipes
  • Easy ingredient swaps and step-by-step images
  • Smart meal planner with shopping lists
Get started
© 2026 The Doctor's Kitchen