Two Boards, Two Knives

In the picture

1. 1A pale wooden board: the surface where only the plain dish is cut, wiped before use.
2. 2A small paring knife: a second knife that touches only the nuts.
3. 3A lidded glass jar: nuts and cheese kept closed so crumbs and oils stay inside.
4. 4A soap pump beside the sink: hands and cloths washed between the two boards.

Examples

• Toasting a plain slice of bread in a pan that still holds crumbs from a nutty one.
• Stirring a plain soup with the spoon that just went into a cheesy sauce.

Quiz: Two Boards, Two Knives (Age 12)

1. 1

   How can traces of an ingredient reach another dish?

   • They can appear only if the food is left out overnight.
   • They can pass from a board, knife, cloth or hand that touched the food.
   • They can spread only through the air in the kitchen.
2. 2

   What should you do between preparing the plain dish and the nut dish?

   • Use the same board and knife but wipe them on a dry cloth.
   • Put the plain dish and the nut dish in the same open bowl.
   • Use separate tools and wash hands and cloths with soap and warm water.
3. 3

   Why should nuts and cheese be kept in a closed container?

   • So they stay colder than the rest of the food.
   • So they are easier to cut into small pieces.
   • So crumbs and oils stay inside instead of spreading.

The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.