Chiba Kaisou Seaweed Jelly
Asian Medium

Chiba Kaisou Seaweed Jelly

Quick answer

Total time
115 min
Level
Medium
Servings
4 servings
Ingredients
3

About this dish

Chiba kaisou is a firm seaweed jelly from the Choshi and Kujukuri coasts, made by cleaning kotojitsunomata seaweed, soaking it, and simmering until it dissolves into a thick mass that sets as it cools.

Read more

The seaweed's regular forked branches resemble the bridges supporting koto strings, which explains its name. Its natural thickening and setting properties once made it useful as an adhesive, while year-end merchants selling it for New Year helped establish it as a refreshing counterpoint to strongly seasoned osechi. This plain version preserves its marine aroma and light salinity and may be served alone or with soy sauce, bonito flakes, and scallion.

Ingredients

servings
IngredientAmountUnit
water2000 mlmlShop
salt¼ tsptspShop
Shop All Ingredients

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Instructions

Read the steps as a cooking flow: prep, heat, seasoning, doneness control, and finish.

4 steps
  1. 1
    Prep

    Remove stones and shells from 110g seaweed, rinse quickly 3 times, cut to 2 to 3cm, and soak in 2000ml water in a deep pot for 60 minutes.

  2. 2
    Control

    Bring to a boil over high heat, reduce to medium as the seaweed dissolves, and stir while scraping the bottom for 35 to 45 minutes until no clumps remain.

  3. 3
    Season

    Add 0.25 teaspoon salt.

    When a spatula drawn across exposes at least 5cm of pot bottom, remove from heat, skim foam, and rest untouched for 2 minutes.

  4. 4
    Control

    Pour slowly into a damp 15cm square mold without trapping bubbles.

    Cool 60 minutes, cover, chill 2 hours, and cut into 4 portions.

Practical Cooking Checks

The cues that matter most while cooking.

Key technique
Sets with the seaweed's own gelling property
Finish cue
Pour slowly into a damp 15cm square mold without trapping bubbles.

Cooking decision evidence

Calculated Charim data and applicable official cooking and food safety guidance.

This recipe

115min, 3 ingredients

Category median

48min, 8 ingredients

Based on 247 recipes

Tips

Remove every stone and shell but rinse quickly so the seaweed retains its setting compounds.

Estimated nutrition (per serving)

Calories
18
kcal
Protein
1
g
Carbs
4
g
Fat
0
g