Metabolic waste. 'Metabolic wastes or excretes are substances left over from metabolic processes (such as cellular respiration), which cannot be used by the organism (they are surplus or toxic), and must therefore be excreted. This includes nitrogen compounds, water, CO2, phosphates, sulfates, etc. Animals treat these compounds as excretes.
Flan is an open pastry or sponge cake containing a sweet or savoury filling. A typical flan of this sort is round, with shortcrust pastry, usually coated with sweet syrup.It is similar to a custard tart or a South African melktert. British savoury flans may have diverged from the Spanish and French custard flans (also known as creme crÃ¨me) caramel in The Middle. ages typical flan of this sort is round, with shortcrust pastry, usually coated with sweet syrup. It is similar to a custard tart or a South African melktert.
The name Flan is begins with a word in old French flaon, which comes from Latin flado meaning custard. According to Alan Davidson, Oxford Food Companion . The same Latin root was used in the Middle English word flaton, and flawn which later became flan.