Norwegian pot super-efficient fabric

Tutorial de avatarNinon d'Ecocotte | Catégories : Alimentation

A flexible, nomadic and elegant Norwegian pot that guarantees maximum thermal insulation and requires only a few basic sewing skills. For a healthy and sober end to your cooking.

Licence : Attribution (CC BY)

Introduction

The Norwegian pot is a great tool for finishing low-temperature cooking using only the energy needed to heat the food.

It not only makes cooking healthy and tasty, but also saves a considerable amount of energy if it is used often (up to 80% savings per cooking).

Be careful, though, not to risk food poisoning with a system that doesn't provide enough insulation and encourages the growth of bacteria (even if you don't eat meat).

The tutorial below is the result of the work of a thermicist-cook who sought to maximise the insulating efficiency of the flexible version of the Norwegian pot.
This shared experience will enable you to guarantee that the temperature will be maintained above 60°C for more than 10 hours with an ordinary stewpot, and much longer with a cast-iron or earthenware casserole, simply by bringing the food to the boil for a few minutes.

Tutorial under licence: CC BY NC


Video d'introduction

Matériaux

- Washed and flocked sheep's wool (quantity according to size chosen - step 1)

All types of wool are suitable. Make sure the wool is properly washed. Flocking wool means aerating it as much as possible with your hands or a carding system to allow the air to settle into the fibre. It is not necessary to obtain a well carded & combed wool mat, quite the opposite
.

- natural fabric 2 times 1m50 x 1m20

Please use a thick fabric for the inside (at least) and a tightly woven fabric to keep the wool strands inside. In the case of very coarse wool, don't hesitate to double your fabric
.

- 50cm 5 handles (optional)

- Wires

- 3m cord

- Button


Outils

- Sewing machine

- XXL compass or string

- Protractor

- Scissors

- Pins

- Ruler

- Chalk

Étape 1 - Sizing GUIDE

This type of Norwegian pot can be adapted to all shapes and sizes of stewpot, so we're talking about maximum capacity rather than size.


To increase the capacity a little or to take into account a large handle (pressure cooker type), I advise you to play with the size of the lid rather than the rest.

Size Maximum capacity 1-

Pillow radius

2- Radius

cutting

3-

Radius

interior

4-

Centre radius Quantity of wool washed

1 3 Litres 17 cm 43 cm 35 cm 12 cm 0.9 to 1.2 kg
2 8 litres 21 cm 55 cm 45 cm 16 cm 1.9 to 2.3 kg
3 12 Litres 28 cm 55 cm 45 cm 16 cm 2.2 to 2.5 kg



Étape 2 - Cutting

Stand on the floor or find a large table.

  • Overlap the two fabrics
  • Mark and fix the centre of your markings on the 2 layers with a needle.
  • Trace the circles of the central part and the cushion according to the size of casserole you want (see size guide table).
  • Cut the 2 layers of fabric together to make sewing easier.


Étape 3 - Tracing

Take chalk with you

  • Use a compass to draw a circle 8 to 10 cm from the edge. This space will allow the cord to pass through and the lid to be wedged to minimise heat loss (diameter depending on your casseroles => see size table).
  • Draw a dotted line around the second circle, which will form the central part.
  • Use a ruler to trace the sides 2 by 2. Check that the space between the sides of the lower part is at least 8-9 cm (more if you have big hands) to allow for padding.
  • The length of the sides determines the maximum height of the casserole.
  • Hatch the upper boundary of a portion that will not be sewn to allow for stuffing.
You can replace :

- chalk with a piece of soap (ideal for dark fabrics)

- the compass by a string


Étape 4 - Assembly of the fabrics

The fabrics are joined together using the central pieced seam.

  • Add pins in the centre of the main part to prevent the fabric from moving.
  • Sew the peripheral circle (1) outside the hatched upholstery area.
  • Sew up the right "sides", respecting the tracing to make sure that your hands will be able to get through when stuffing. The sides of the main padding area can be narrowed by 1cm to make it easier for the wool to pass through.
  • Reinforce the locking stitches as these seams will be put under a lot of stress later on.
  • Cut the seam threads.
  • Erase your tracing, leaving only the hatched area of the stuffing.
Do not close the piecing that will be used for the padding
You can attach the handles, pass the cord through and partially close the outside at this stage (steps 7,8 & 9)

Étape 5 - Padding

This step is essential to limit thermal bridges and guarantee the insulating efficiency of your Norwegian pot (quantity of wool required in the "Sizing Guide" - step 1).

Pad with wool cuffs without making tight little balls

starting with the corners

  • Remplir les 4 premiers camemberst au 3/4 puis retourner pour faciliter la manipulation.
Jauger la quantité de laine est le plus compliqué : Le camembert doit être ferme mais permettre la fermeture en se repliant légèrement.
Ne pas tasser la laine en petites boules serrées. Ne pas trop tirer sur les coutures.
  • Terminer le remplissage des camemberts
  • Passer au rembourrage du centre.
  • Commencer par créer une liaison entre chaque camembert et le centre avec une grosse poignet de laine.
  • Rembourrer le centre plus fermement car il va se tasser avec le temps
  • Terminer par le rembourrage du dernier camembert sans faire déborder la laine pour permettre sa fermeture

Étape 6 - Fermeture partie centrale

  • Coudre la partie centrale suivant le marquage hachuré.
  • Effacer ensuite ce marquage restant




Étape 7 - Positionnement des anses (optionnel)

Placer les anses à l'opposé l'une de l'autre en prenant soin de ne pas les vriller

Les fixer avec des épingles



Étape 8 - Passage du cordon

Positionner le cordon en le fixant avec des épingles pour éviter qu'il ne se prenne dans la couture

Placer et fixer la sortie du cordon au centre d'un des camemberts à 90° des anses (s'il y en a)

Fixer le cordon vers la couture intérieure avec des épingles pour éviter de le prendre dans la couture

Préparer la fermeture extérieure en retournant les deux couches de tissus sur 1cm. Fixer avec des pinces ou des épingles.




Étape 9 - Fermeture extérieur

  • Coudre la partie extérieure

S'assurer de bien prendre les 2 couches de tissu et Attention aux plis


  • Renforcer la couture au niveau du passage de cordon par un zigzag serré


Étape 10 - "bouton"

Glisser le bouton sur le cordon




Étape 11 - Le coussin

  • Coudre le coussin envers-contre-envers en laissant une ouverture de 10cm pour le rembourrage.
  • Retourner le coussin assemblé
  • Rembourrer le coussin :

Il doit former une sorte de "galet" assez compact de 8-9 cm d'épaisseur

Refermer la couture du coussin


Étape 12 - Résultat

Et voilà votre Marmite norvégienne est terminée !

Il ne vous reste plus qu'à vous lancer dans la cuisson à basse température à l'étouffé : ça demande un peu d'anticipation, mais le résultat est tellement savoureux.

Notes et références

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