Elderflower Champage Going Mouldy

My week old elderflower champagne has began to mould and the smell is quite intense and over powering at times. I think the problem could be that some of the elderflower bits were left in and some still remain. The champagne is fizzing which I heard is a good sign but i'm concerned that my champagne will need to be chucked away due to the mould, there was not a great deal but it is off putting and I have removed while I search for a solution. The champagne is being kept in a 20 litre bucket and covered by an old t-shirt and secured with some rope to preven insects getting in. Is my champagne a write off?

This is a first attempt for me so i'm not expecting miracles or anything, just need to know if my champagne is still good to brew.

Yeh well that's probably right cos mine started to smell after 3 or 4 days of being in the bucket.. It got so bad it smelt like vomit, it was really quite disgusting to say the least so I chucked it down the drain.

I'll try again next year

There are two types of elderflower, the white ones and creamy ones. Apparently if you use the creamy coloured ones it gives the cats pee smell. The mold I have no idea with as I tend to sulphite my must for 24 hours to stun any wild yeasts before pitching my brewers yeast. I certainly wouldn't add sulphite once it is fermenting.

There are some very knowledgable folks over at Wines at home who would be able to help.