Yellow-Brown Chunks/Pieces?

[TimOfWine]

Hey all, I've been making red wine for around 4 years now (80 gallon batches) and am hoping you can help me out. The last batch, a Barbera, has been in cool storage in bottles for 9 months or so. Sulfite was around 40-50ppm.

I've been pulling bottles every so often without issue. But just noticed with the lastest couple, that there is some yellow-brown chunks (thin, kinda like a yeast) floating around after I moved it from storage. After a panic I poured one out into a jar, through a filter, to see if I could catch the pieces. However when pouring, the pieces dissolved before hitting the filter and the wine looks fine. I should also mention tastes fine too.

My question is, does anyone know what that stuff may be? Did I screw up the fining, and/or not rack enough,something else?

Hopefully you can see this pic of the bottle with a flashlight shining below.

 

[NorCal]

How long was it stored, before it was bottled? My bet is that it was bottled before a year and the wine wasn’t done with all its changes that it can go through.

 

[TimOfWine]

How long wast stored, before it was bottled?

Started fermentation for 2017 season in November. So probably bottled around May 2018 (did it earlier thank prior years). I believe there were 4-5 rackings between.

 

[mainshipfred]

Just a guess but could it be tartrates?

 

[TimOfWine]

Just a guess but could it be tartrates?

I don't think so, they don't look like crystals close up. I'm now just wondering if it's not some leftover from not racking enough near the end. This was the first time I tried bentonite and maybe rushed the job.

 

[NorCal]

Was it from grapes? I know if I bottled my wine from grapes in 6 months after harvest that I would have fallout in the bottle in my reds.