Calculate Preparation Water Before Choosing Emergency Food

Emergency food and supplies, chosen for your needs

Browse by category or compare food kits. Check the contents, portions and delivery arrangements before ordering.

[Pre-order] 7DAYS Compact Staple Kit — 18 Varieties, 21 Servings

[Pre-order] 7DAYS Compact Staple Kit — 18 Varieties, 21 Servings

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HK$1,092.00

Available to preorder

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[Pre-order] Onishi Alpha Rice Assortment — 12 Varieties, 12 Packs

[Pre-order] Onishi Alpha Rice Assortment — 12 Varieties, 12 Packs

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HK$594.00

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[Pre-order] Saibou 7-Day Staple Food Kit — 18 Varieties, 21 Items

[Pre-order] Saibou 7-Day Staple Food Kit — 18 Varieties, 21 Items

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HK$1,152.00

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Products are procured after payment and are not Hong Kong ready stock. Availability and delivery timing require confirmation. Days in kit names do not guarantee a full day of nutrition for each person; check portions, drinking water and allergens.

A cupboard can contain plenty of emergency food while its preparation requirements remain unplanned. Counting pouches tells you what you own; it does not tell you whether you have the water or time to prepare them.

Build a separate preparation-water budget. Record the water required by each exact product, multiply it by the number of pouches you plan to prepare and add the results. Keep drinking-water needs separate.

Different packs need different amounts of water

The manufacturer's current pages give these specifications. Check the directions on the packs you actually use.

Food per pouch Dry content Added water Manufacturer
Onishi Gomoku Rice 100 g 160 mL Gomoku specification
Onishi portable salmon rice ball 42 g 67 mL Salmon rice ball specification

The portions are different. A lower water requirement does not make the rice ball an equivalent replacement for the larger rice pouch. This comparison calculates preparation water, not nutritional adequacy.

Work through a mixed-stock example

Suppose your preparation list contains six of the Gomoku pouches above and four of the salmon rice balls:

  • Rice: 6 × 160 mL = 960 mL.
  • Rice balls: 4 × 67 mL = 268 mL.
  • Total: 1,228 mL, or 1.228 litres.

That covers added water for those ten particular packs only. It excludes drinking, other foods, cleaning and other uses. Ten packs are not automatically ten complete meals or a complete household reserve.

For your own list, multiply each pack's water requirement by its quantity. Add soup and other rehydrated foods as separate entries. Do not apply one rice product's specification to another food.

Plan around the last pack you prepare

Onishi's linked preparation instructions for these regular rehydrated rice products and non-microwave rice balls distinguish hot water from water at 15°C. They give approximately 15-minute hot-water and 60-minute water preparation times for the relevant products, with exceptions such as red rice. Follow each series' directions rather than treating any warm water as boiling water. Manufacturer preparation instructions

Opening packs, removing the included items and adding water also take time. If a particular pack requires 60 minutes and the last pouch is closed at 18:05, calculate readiness from that pouch's start time. The first pouch's timer does not establish that every pouch is ready.

You can start foods with longer waits first and arrange foods labelled for direct consumption around them. Each product still needs its own preparation steps completed.

Keep food and preparation resources on separate lists

Exact food and version Pouches Water per pouch mL Total mL Temperature and waiting instructions
Gomoku Rice 100 g example 6 160 960 Check the relevant pack
Salmon rice ball 42 g example 4 67 268 Check the relevant pack
Another household item ____ ____ ____ ____

Record utensils and opening instructions alongside the water information. This makes the reserve easier for another household member to use without guessing.

If nearly everything on the food list requires added water, assess preparation resources before adding more of the same food. Include preparation method when deciding which foods to stockpile, rather than comparing shelf-life claims alone.

Compare the actual contents of a set

The store's five-pouch Gomoku Rice pack and Onishi rice ball assortment provide starting points for comparing sale units. Calculate each flavour from its own package; the salmon figure is not a specification for every rice ball in an assortment.

Continue with the no-fire preparation guide for other preparation methods, and the family quantity guide to plan people and meals separately.

Download the worksheet

Open or download the text worksheet. Save a copy to fill in or print.

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