Feeding Schedule, Recommended Amounts

In this example, I’m listing 300 grams of mashed potatoes as a side dish for dinner.

However, the customer doesn’t see those 300g; they only see the complete, combined product (Mashed Potatoes with Whole Milk, 1320g, and 1210 Cal).
The customer does have the option to log only a portion of the meal (300 g), but they won’t see anywhere that I’ve prescribed 300 g.