We don't recommend seasoning the mould in the oven prior to use. This action may change the colour of the mould.
Before use, wipe the mould with cloth (cotton recommended) using a little bit of oil (High smoke point oil recommended).
After use, try to avoid washing with water, but if necessary, use a soft sponge and do not use detergent. Wash for less than 30 seconds. Dry immediately.
Because it's 100% copper, discoloration due to heat and oxidation over time is normal.